8 Best Appetite Suppressants to Burn Fat, Boost Metabolism, and More in 2023

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Appetite suppressants have gained attention and curiosity from individuals seeking effective solutions to control their appetites. They’re not a fix for a bad diet or lack of exercise, but once you have your eating and working out dialed, you might find that appetite suppressants can give you some extra help cutting weight. Most commonly, you will find products that are marketed as natural alternatives to traditional medications, and offer a convenient and accessible approach to appetite control.
Whether you’re an athlete trying to cut for your next competition or want to lean out for summer, an appetite suppressant may be something you have considered trying. But with so many on the market, it can be hard to find out which ones are legit and which ones are all hype. We dug up some of the best appetite suppressants out there to give you a variety of great options.
Best Appetite Suppressants

Best Appetite Suppressant Overall
The best appetite suppressant should, first and foremost, help curb your appetite. Instant Knockout not only has the potential to curb your appetite, it also sports a hefty dose of ingredients that may help you burn fat and give you a boost of energy to boot.
Instant Knockout
Instant Knockout utilizes 1,800mg of glucomannan, a dietary fiber that absorbs water when it hits your stomach. As it expands, it takes up more room, which should help you feel fuller and make you less likely to overeat. There’s also 100mg of cayenne pepper, which not only helps you feel satiated, but can boost fat oxidation, helping your body to burn fat at a higher rate. (1)




Instant Knockout









Instant Knockout is a comprehensive fat burner that contains green tea extract, as well as cayenne pepper seeds and glucomannan. Plus, this supplement also includes caffeine, theanine, and black pepper extract.







There are other ingredients that can help you burn fat as well, including 300mg of caffeine and 100mg of l-theanine, which can boost your energy and give you focus to push harder during your workouts, as well as 5mg of vitamin B6, which can help boost your metabolism. The dosage recommendations can help too— the instructions say to take one pill four times a day, so you can keep that satiated feeling throughout the day.
Specs

Active Ingredients: Glucomannan, vitamin D3, vitamins B6 & B12, caffeine, L-Theanine, green tea extract
Price: $65.00
Capsules: 120
Serving Size: 1 capsule 4x per day

Pros

Since you take these pills throughout the day, the steady stream of caffeine may provide a consistent energy boost.
The large dose of glucomannan is designed to make you feel full and less likely to overeat.
The cayenne pepper and vitamin B6 can help your body burn off your fat stores.

Cons

This product is slightly more expensive than comparable ones.
The amount of caffeine in these suppressants may cause some people to experience jitters.
There’s black pepper in this supplement, so if you’re allergic, you’ll want to avoid this one.

Instant Knockout is our favorite appetite suppressant thanks to its glucomannan, which can make you feel full, as well as its additional ingredients designed to help your body burn fat. Plus, you take it four times a day, so the effects are intended to last all day long.
Best Stim-Free Appetite Suppressant
While people may think that stim-free appetite suppressants don’t have what it takes to provide results, Jacked Factory Lean-XT aims to prove them wrong. Its natural ingredients are designed to curb hunger, boost metabolism, and feel a light energy boost.
Jacked Factory Lean-XT
If you’re trying to avoid stimulants, finding an appetite suppressant can be challenging. Luckily, Jacked Factory Lean-XT offers an all-natural thermogenic fat loss supplement. Its caffeine- and stimulant-free formula sets it apart, making it an ideal choice for those who are sensitive to caffeine or prefer to avoid stimulants.




Jacked Factory Lean XT









This product contains 750mg of l-carnitine, 500mg of green tea extract, and 180mg of coleus forskohlii and forskolin. Plus, it has Bioperine to potentially help with absorption.







The stim-free formula includes key ingredients, such as forskolin, green tea extract, and acetyl l-carnitine, all of which may boost metabolism, control hunger, and help your body utilize fat for fuel and energy. The addition of bioperine can help your body digest and absorb the active ingredients, and put them to work burning fat.
Specs

Active Ingredients: Forskolin, green tea extract, acetyl l-carnitine
Price: $31.49
Capsules: 60
Serving Size: 2 capsules 1-2x per day

Pros

It is caffeine-free and stimulant-free, which makes it suitable for individuals who are sensitive to caffeine or prefer to avoid stimulants.
The bioperine in this supplement can help the body absorb more of the active ingredients, as well as possibly boosting metabolism.
Since this is stimulant-free, you can stack it with other thermogenic supplements without overloading on caffeine.

Cons

The lack of stimulants in the product means you won’t be getting a huge jolt of energy.
The bioprene comes from black pepper fruit extract, so if you’re allergic to black pepper, you should avoid this supplement .

If you are seeking a non-stimulant appetite that contains a load of potentially fat-burning ingredients, Lean-XT should be high on your list. With ingredients designed to help your body burn fat and provide a mild to moderate dose of energy, you can get all the burn without any of the jitters.
Best Appetite Suppressant and Fat Burner
Among the myriad options available in the market, Transparent Labs Fat Burner is one of the best appetite suppressants and fat burners. It is well crafted using the highest-quality ingredients, and can effectively curb cravings and enhance thermogenesis (which can ultimately promote a more efficient fat-burning process).
Transparent Labs Fat Burner
Transparent Labs Fat Burner’s main appetite suppressant is 5-HTP, a product of the plant griffonia simplicifolia. It’s a serotonin precursor, and studies have shown that serotonin may increase your satiety when you eat. (2)


10% Off




Transparent Labs Fat Burner









This fat burner contains research suggested ingredient amounts of green tea extract, as well as synephrine, and HTP-5, which may suppress your appetite.







In addition, this product also has green tea extract, capsimax, and 125mg of caffeine — ingredients that may support metabolic rate and improve your energy and focus, so you can push harder in the gym and burn off more fat there as well. The inclusion of bioperine may also help you absorb more of these ingredients.
Specs

Active Ingredients: 5-HTP, green tea leaf extract, forslean, natural caffeine, l-theanine, Capsimax, bioperine
Price: $54.99
Capsules: 60
Serving Size: 2 capsules 2x per day

Pros

This product contains ingredients that support and optimize metabolic function, helping your body burn more calories, potentially leading to weight loss.
The 5-HTP included may increase your serotonin levels, helping you feel fuller when you eat.
It may help to enhance energy levels and improve focus, which can help you push harder and burn more calories when you exercise.

Cons

There may be too much caffeine in this supplement for people who are sensitive to stimulants.
It is slightly more expensive than some comparable products.
The bioperene is made from black pepper extract, so if you’re allergic to black pepper, this isn’t the supp for you.

If you’re looking for a solid appetite suppressant and fat burner, Transparent Labs Fat Burner nails it with the combination of 5-HTP, which may help you feel fuller when you eat. Ingredients like green tea extract, capsimax, corslean, caffeine, and l-theanine are also intended to help you burn off fat.
Best All Natural Appetite Suppressant
Many appetite suppressants are full of ingredients with long, hard-to-pronounce names you may not have heard of. Thankfully, Swolverine has created a natural product called Swolverine Therm that contains all-natural ingredients, like green tea leaf, yerba mate, garcinia cambogia (okay, that one’s kind of tough to say), guarana, and forskolin.
Swolverine Therm
Looking for an all-natural appetite suppressant? Swolverine Therm contains natural ingredients that are meant to curb your appetite, like 50mg of yerba mate and 100mg of cocoa extract. All of the ingredients are derived from plants and animals, like the 150mg of iodine (derived from kelp), which may boost metabolism, and 125mg of chitosan (derived from crustacean shells), which studies show may contribute to weight loss (3). There are also zero preservatives or fillers, which means you’re only paying for products that contribute to weight loss.




Swolverine Therm Fat Burner









The ingredient list is pretty robust, but most of the ingredients are geared towards thermogenesis. Some of the ingredients that help with this are green tea leaf extract, cayenne pepper, caffeine, cocoa extract, and garcinia cambogia.







In addition, 20 clinical ingredients like guarana, cayenne pepper, forskolin, and garcinia cambogia, all work together to potentially speed up your metabolism and help you burn fat. Therm also has 10mg of chromium and 50mg of gymnema sylvestre, which can help regulate blood sugar and regulate “bad” cholesterol. . And you won’t have to pay through the nose for a bottle, since it only costs about $0.40 per serving.
Specs

Active Ingredients: Chromium, gymnema sylvestre, green tea leaf, yerba mate, garcinia cambogia, guarana, forskolin
Price: $34.99
Capsules: 90
Serving Size: 1 tablet 1-2x per day

Pros

This product utilizes Guarana which contains up to four times the amount of caffeine than coffee and can create long-lasting sustained energy.
This supp is entirely made up of all-natural ingredients.
For less than $35, this product has a lot of potential benefits for a small price.

Cons

This formula contains shellfish, so people who are allergic cannot take it.
The stimulants in Therm may cause sleep disturbances if taken too close to bedtime.
If you’re looking for a huge boost of energy, you may want more than 100mg of caffeine.

Swolverine’s Therm provides a comprehensive blend of natural ingredients like chromium, yerba mate, and forskolin that are designed to reduce your hunger and speed up your metabolism. If you’re looking for an all-natural way to cut fat and curb your appetite, Therm could be the way to go.
Best Appetite Suppressant for Men
When men cut weight, energy levels can drop, which can lead to sluggish workouts (and a temptation to up the calories). Instant Knockout helps combat this with ingredients that can help men boost their energy levels while you cut, so they can keep their hard-earned muscle while shedding fat.
Instant Knockout
One of men’s biggest concerns when cutting weight, whether it’s to make weight for a fight or to make those abs pop, is losing muscle because their calorie deficit makes them too fatigued to hammer at the gym. Good news — Instant Knockout has 300mg of caffeine, which works with the cayenne pepper extract and vitamin B6 to not only help boost your metabolism, but also to help you push through those calorie-deficit workouts. The B6 is particularly great for men as they are more likely to have a vitamin B deficiency than women. Not to mention, Instant Knockout was formulated and designed specifically for men.




Instant Knockout









Instant Knockout is a comprehensive fat burner that contains green tea extract, as well as cayenne pepper seeds and glucomannan. Plus, this supplement also includes caffeine, theanine, and black pepper extract.







As far as appetite suppression goes, 1,800mg of glucomannan will expand as it absorbs water in your stomach, potentially making you feel fuller. In addition, the vitamin D3, vitamin B12, and green tea extract, all may help boost your metabolism and burn off excess fat. (4)(5)
Specs

Active Ingredients: Glucomannan, vitamin D3, vitamins B6 & B12, caffeine, l-theanine, green tea extract
Price: $65.00
Capsules: 120
Serving Size: 1 capsule 4x per day

Pros

The high dose of caffeine may help men push hard through calorie-deficit workouts.
Studies show that men are more susceptible to vitamin B deficiency, so the inclusion of vitamins B3, B6, and B12 is ideal for men — especially when it comes to increasing energy for calorie deficit workouts. (5)
The addition of green tea extract may help digest carbs and reduce bloat.

Cons

At over $0.50 per serving, this is pricier than other supplements on this list.
300mg of caffeine might be too much for people who are sensitive to it.

Any man who’s done a cut knows the frustration of pushing through a workout when you are in a calorie deficit. Fortunately, Instant Knockout has a stack of ingredients to give you the energy to push through that deficit to get in a good workout. Plus, it has vitamins B3, B6, and B12, vitamins, which are more commonly deficient in men than women.
Best Appetite Suppressant for Women
A great appetite suppressant for women should address their specific needs and challenges regarding weight loss, namely, the ability to reduce food cravings. Leanbean addresses this with a high dose of glucomannan to keep you feeling full, as well as potassium, an electrolyte which may reduce emotional eating.
Leanbean
Food cravings are a huge challenge for women who want to cut weight. Designed specifically for women, Leanbean contains a blend of natural ingredients carefully selected to target appetite control and reduce cravings. For example, ingredients like 3,000mg of glucomannan, garcinia cambogia, and raspberry ketones are designed to work together to promote a feeling of fullness. This fullness can help reduce the food cravings that often plague women who are on a diet.




Leanbean









With less caffeine than a cup of, Leanbeans formula, marketed to women, suppresses your appetite and promotes a healthy metabolism.







This supplement includes potassium, which can lower blood pressure and reduce stress, decreasing the likelihood of emotional eating. It’s on the pricier side at around $2.00 per serving, but if you’re looking for a multifaceted fat-burner designed specifically for women, Leanbean is a great choice.
Specs

Active Ingredients: Potassium, konjac fiber (glucomannan), choline, chromium picolinate,
garcinia cambogia, green coffee bean extract, turmeric, acai berry
Price: $59.99
Capsules: 180 (30 servings)
Serving Size: 2 pills 3x per day

Pros

Choline and Vitamin B6 help support hormone regulation and help maintain a balanced metabolism.
It provides natural energy-enhancing ingredients such as green coffee beans and turmeric to provide a gentle energy boost without the crash associated with stimulants.
The potassium may improve moods and reduce emotional eating.

Cons

It has a higher price point than other market appetite suppressants.
Women whose stomachs don’t respond well to high doses of fiber should steer clear of this product.
Women who rely solely on the supplement without making necessary lifestyle changes may not experience optimal results.

Leanbean stands out as a great appetite suppressant for women due to its ingredients that can decrease appetite, discourage emotional eating, and boost metabolism. It’s on the pricey side, but if you’re looking for a multifaceted approach to cutting weight, it’s a solid option.

When it comes to finding the best appetite suppressant to boost metabolism, Swolverine Therm stands out as a top contender. This supplement has loads of ingredients designed not only to curb your appetite, but to help your body burn fat while you rest.
Swolverine Therm
While it still has some ingredients like yerba mate and cocoa extract that are intended to curb your appetite, Swolverine Therm places a heavy emphasis on increasing your metabolism. Ingredients like green tea leaf, garcinia cambogia, and cayenne pepper can potentially help increase calorie burn and enhance fat oxidation.




Swolverine Therm Fat Burner









The ingredient list is pretty robust, but most of the ingredients are geared towards thermogenesis. Some of the ingredients that help with this are green tea leaf extract, cayenne pepper, caffeine, cocoa extract, and garcinia cambogia.







These ingredients are designed to increase thermogenesis, which works by raising the body’s internal temperature, helping it to burn more calories as it works to cool down. Many of the supplements on this list have an emphasis on increasing energy and suppressing appetite, while Therm places its focus on cranking up that metabolism and burning away fat.
Specs

Active Ingredients: Green tea Leaf, yerba mate, garcinia cambogia, guarana, forskolin
Price: $34.99
Servings: 90
Serving Size: 1 tablet 1-2x per day

Pros

It has a blend of ingredients like guarana, yerba mate, and gymnema sylvestre that can effectively suppress appetite and curb cravings.
The potent doses of guarana cambogia, cayenne pepper, and forskolin are meant to ramp up your metabolic rate, increasing calorie burn and improving fat oxidation.
At $0.40 a serving, this supplement won’t break the bank.

Cons

Stimulants like guarana and green tea leaf may not be suitable for individuals sensitive to caffeine or other stimulants.
If you’re looking for mood enhancement ingredients, you’ll find more in other options on this list.

For those seeking a combination appetite suppressant and metabolism booster, Swolverine Therm is a standout choice. Its focus on speeding up metabolism with ingredients like garcinia cambogia and cayenne pepper can potentially rev up your calorie burn, helping you shed fat.
Best Appetite Suppressant Pills
If you’d rather take your supplements in pill form, take a good hard look at Huge Supplements Eliminate. With ingredients designed to decrease appetite, burn off fat, and give you a boost of energy, Eliminate tops our list of the best appetite suppressant pills.
Huge Supplements Eliminate
There are a lot of reasons people choose pills over powdered supplements — you don’t have to mix them, they don’t take up a lot of space in a workout bag, and they don’t make a huge mess if you drop them on the floor. This appetite suppressant pill stands out thanks to its relatively easy dosage. Instead of taking these pills throughout the day, you only need to take four gelatin caps once in the morning.




Huge Supplements Eliminate









Packed with carnitine, 5-HTP, theanine, caffeine, and green coffee bean extract, this product is a great option for those who want a robust list of ingredients in their supplement — it contains 13 dedicated fat burning ingredients.







As far as appetite suppression goes, 5-HTP is the star of the show here. As a precursor to serotonin, it can help you feel more satisfied and less likely to overeat. The other ingredients listed, like paradoxine, green coffee bean extract, and acetyl-l-carnitine, work in various ways to help speed up your metabolism and help your body burn off fat. Plus, the 250mg of caffeine can give you an extra jolt of energy throughout the day.
Specs

Active Ingredients: Green tea extract, 5-HTP, acetyl-l-carnitine, paradoxine, forskolin, caffeine anhydrous
Price: $49.95
Servings: 30
Serving Size: 4 tablets 1x per day

Pros

The 5-HTP included here may provide you with a feeling of satiety, which can lead you to eat less.
Having these in pill form makes it much easier to take them at the gym or office.
Ingredients like paradoxine and forskolin may help boost your body’s metabolism.

Cons

These are gelatin capsules, which won’t work for people who want to avoid animal products.
If you’re sensitive to caffeine, the 250mg in this supplement may be too much.

When it comes to choosing an appetite suppressant pill, the combination of ingredients designed to help you eat less and burn more fat make Huge Supplements Eliminate an outstanding choice. Plus, pills are always easier than powders to grab and take with you on the go.
How We Chose The Best Appetite Suppressants
There are a lot of supplements that claim to be effective fat-burning supplements, but it can be hard to separate fact from hype. So we made it a point to focus on ingredients that had studies backing their effectiveness, that they were included in substantial doses, and that the prices were fair for what we were getting.
Ingredients
When selecting the best appetite suppressants based on ingredients, we looked to see whether the ingredients had any studies that showed a measure of efficacy. We looked for ingredients such as natural plant extracts, dietary fibers, and thermogenic compounds that have been clinically studied for their ability to reduce hunger and promote satiety. We also considered including metabolism-boosting ingredients that can enhance weight loss efforts.
Dosage
One huge consideration was the dosage of each ingredient. Since these supplements are intended to decrease appetite, we looked at the amount of things like glucomannan fiber, which expands in your stomach to help you feel full.
Credit: Aleksey Korchemkin / Shutterstock
We included supps with higher doses like 1,800mg or above, or with supplements that had lower doses, we made sure they were bolstered by other appetite suppressants like 5-HTP.
Price
We also took into account the affordability and overall value of each product. We evaluated the price range of different appetite suppressants, and compared them against factors such as quality, effectiveness, and ingredients. While some supplements on this list are more expensive than others, we tried to ensure that each one is worth its cost.
Benefits of Appetite Suppressants
There are many benefits of adding appetite suppressants to your weight loss plan. They can help with both weight loss and health goals thanks to their potential to improve energy levels, boost metabolism, and, of course, suppress your appetite.
Increased Energy
Certain ingredients found in appetite suppressants, such as caffeine or green tea extract, have natural energizing properties and can stimulate the central nervous system, increasing alertness and reducing fatigue.(6) These supplements can help stabilize blood sugar levels, preventing daily energy crashes and fluctuations.
Improved Metabolism
Appetite suppressants can provide an added boost to metabolic function. Some ingredients in these supplements like cayenne pepper have thermogenic properties, which can increase the body’s calorie-burning capacity. (1) This can help individuals achieve their weight loss goals more efficiently by supporting fat burning and boosting overall energy expenditure.
Decreased Appetite
Using appetite suppressants with ingredients like glucomannan can help to enhance feelings of fullness and satiety. (4) Promoting a sense of satisfaction after meals can help individuals stick to portion control and make healthier food choices. This can lead to more balanced and controlled eating habits.
How Much Do Appetite Suppressants Cost?
Typically, appetite suppressants range in price from about $35 to $70 per container. The cost can fluctuate based on factors like the ingredients, dosage, and amount of servings per container. The delivery system can be a factor as well, as pills can be pricier than powders.



Best Appetite Suppressant Overall
Instant Knockout
$65 for 120 capsules


Best Stim-Free Appetite Suppressant
Jacked Factory Lean-XT
$31.49 for 69 capsules


Best Appetite Suppressant and Fat Burner
Transparent Labs Fat Burners
$65 for 120 capsules


Best All Natural Appetite Suppressant
Swolverine Therm
$54.99 for 60 capsules


Best Appetite Suppressant for Men
Instant Knockout
$65 for 120 capsules


Best Appetite Suppressant for Women
LeanBean
$59.99 for 180 capsules


Best Appetite Suppressant to Boost Metabolism
Swolverine Therm
$54.99 for 60 capsules


Best Appetite Suppressant Pills
Huge Supplements Eliminate
$49.96 for 120 capsules



The prices of these products range greatly. Before you commit to an appetite suppressant, make sure that it has ingredients that will help you hit your goal, whether it’s to eat less in general, burn off more fat, or keep your energy up at the gym in a calorie deficit. Also, if a brand seems more expensive, take a look at how many servings it has. It may just be that it has more servings per container and may actually cost less per serving.
What to Consider Before Buying Appetite Suppressants
When considering the purchase of appetite suppressants, it’s important to know that these supplements are intended to supplement a good workout and proper nutrition, not replace them. They won’t do you any good if you’re eating garbage and not working out. If you have nutrition and exercise down and you still want help cutting weight, consider why you’re taking one. Are you trying to eat less? Do you want to speed up your metabolism? Plus, keep in mind that you may be sensitive to some of the ingredients and make sure to avoid those. Finally, decide how much you’re willing to spend.
Proper Nutrition and Exercise
If you don’t have your eating habits on point and you’re not exercising regularly, you shouldn’t be considering appetite suppressants yet. While these may help you lose extra weight, they won’t do a thing if you’re not taking care of the fundamentals.
Credit: Alexander Raths / Shutterstock
Find a nutrition plan that you can stick with and start exercising regularly, and if you still need help dropping some pounds, then you can start looking for supplemental help.
Sensitivity to Ingredients
When considering the purchase of appetite suppressants, make sure that you don’t have any allergies or sensitivities to any of the ingredients in the products you’re considering. Many appetite suppressants have ingredients like cayenne or black pepper extracts, which can cause allergic reactions in some people. Also, many of these products contain caffeine, sometimes in high doses. If you’re particularly sensitive to caffeine or stimulants, you may want to steer clear of those ones.
Budget
Buying supplements can take a bite out of your wallet. Appetite suppressants are no exception, so it is crucial to consider what your budget is. They can vary in price, so it’s essential to determine a budget and stick to it. Keep in mind that higher-priced products don’t necessarily guarantee better results, so it’s important to find a balance between affordability and quality.
Goals and Needs
Take some time to think about your overall goals and what aspects of an appetite suppressant are most likely to help you achieve them. Determine whether your primary focus is reducing cravings, boosting metabolism, or promoting weight loss. Different products may have varying mechanisms of action and ingredients, so understanding your goals will help you select the most suitable option.
Final Word
If you’re looking for some help losing weight, an appetite suppressant can be helpful. These supplements work by curbing hunger cravings, promoting feelings of fullness, and potentially boosting energy levels, but they’re not magic pills. Appetite suppressants are called supplements because they’re intended to supplement a good diet and a consistent workout regimen.
If you’ve got your nutrition and workout dialed, and you want an extra edge in cutting weight, an appetite suppressant can help. When you’re deciding which appetite suppressant to use, consider your price range, what ingredients you need to avoid, and what you want to focus on, be it eating less, burning more fat, or working harder at the gym. Once you have that figured out, you can use this list to help you make the best choice.
FAQs
How much do appetite suppressants cost? Appetite suppressants range from $35 to $70 per container, with some outliers on either end. The range is usually due to the number of servings included, the form of delivery (pill vs. powder), and the quality/number of ingredients in each supplement.
What is the best appetite suppressant? The best appetite suppressant is truly whichever one best suits your goals and budget. Instant Knockout is our best overall pick because of its well-rounded focus on appetite suppression, fat burning, and energy.
How often should you use appetite suppressants? Generally, appetite suppressants are taken once or twice a day — usually before meals or as directed. It’s essential not to exceed the recommended dosage, as doing so may increase the risk of side effects. Always read the product label or consult with a healthcare professional for specific guidelines tailored to the appetite suppressant you are using.

References

Zheng, J., Zheng, S., et al. Dietary capsaicin and its anti-obesity potency: from mechanism to clinical implications (2017). Biosci Rep. 2017 Jun 30; 37(3): BSR20170286. Published online 2017 May 11.
Voigt, J., Fink, H. Serotonin controlling feeding and satiety (2015). Behav Brain Res. 2015 Jan 15;277:14-31. doi: 10.1016/j.bbr.2014.08.065. Epub 2014 Sep 16.
Jull, A., Mhurchu, C., et al. Chitosan for overweight or obesity (2008). Cochrane Database Syst Rev. 2008 Jul 16;(3):CD003892. doi: 10.1002/14651858.CD003892.pub3.
Keithley, J., Swanson, B., et al. Safety and Efficacy of Glucomannan for Weight Loss in Overweight and Moderately Obese Adults (2013). J Obes. 2013; 2013: 610908. Published online 2013 Dec 30. doi: 10.1155/2013/610908
Margalit, I., Cohen, E., et al. Vitamin B12 Deficiency and the Role of Gender: A Cross-Sectional Study of a Large Cohort (2018). Annals of Nutritional Metabolism. 2018;72(4):265-271. doi: 10.1159/000488326. Epub 2018 Mar 29.
Dulloo, A., Rohrer, C., et al. Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans (1999). Am J Clin Nutr. 1999 Dec;70(6):1040-5. doi: 10.1093/ajcn/70.6.1040.

Appetite suppressants have gained attention and curiosity from individuals seeking effective solutions to control their appetites. They’re not a fix for a bad diet or lack of exercise, but once you have your eating and working out dialed, you might find that appetite suppressants can give you some extra help cutting weight. Most commonly, you will find products that are marketed as natural alternatives to traditional medications, and offer a convenient and accessible approach to appetite control.


Whether you’re an athlete trying to cut for your next competition or want to lean out for summer, an appetite suppressant may be something you have considered trying. But with so many on the market, it can be hard to find out which ones are legit and which ones are all hype. We dug up some of the best appetite suppressants out there to give you a variety of great options.


Best Appetite Suppressants

Best Appetite Suppressant Overall
The best appetite suppressant should, first and foremost, help curb your appetite. Instant Knockout not only has the potential to curb your appetite, it also sports a hefty dose of ingredients that may help you burn fat and give you a boost of energy to boot.


Instant Knockout
Instant Knockout utilizes 1,800mg of glucomannan, a dietary fiber that absorbs water when it hits your stomach. As it expands, it takes up more room, which should help you feel fuller and make you less likely to overeat. There’s also 100mg of cayenne pepper, which not only helps you feel satiated, but can boost fat oxidation, helping your body to burn fat at a higher rate. (1)






Instant Knockout











Instant Knockout is a comprehensive fat burner that contains green tea extract, as well as cayenne pepper seeds and glucomannan. Plus, this supplement also includes caffeine, theanine, and black pepper extract.









There are other ingredients that can help you burn fat as well, including 300mg of caffeine and 100mg of l-theanine, which can boost your energy and give you focus to push harder during your workouts, as well as 5mg of vitamin B6, which can help boost your metabolism. The dosage recommendations can help too— the instructions say to take one pill four times a day, so you can keep that satiated feeling throughout the day.


Specs
  • Active Ingredients: Glucomannan, vitamin D3, vitamins B6 & B12, caffeine, L-Theanine, green tea extract
  • Price: $65.00
  • Capsules: 120
  • Serving Size: 1 capsule 4x per day
Pros
  • Since you take these pills throughout the day, the steady stream of caffeine may provide a consistent energy boost.
  • The large dose of glucomannan is designed to make you feel full and less likely to overeat.
  • The cayenne pepper and vitamin B6 can help your body burn off your fat stores.
Cons
  • This product is slightly more expensive than comparable ones.
  • The amount of caffeine in these suppressants may cause some people to experience jitters.
  • There’s black pepper in this supplement, so if you’re allergic, you’ll want to avoid this one.
Instant Knockout is our favorite appetite suppressant thanks to its glucomannan, which can make you feel full, as well as its additional ingredients designed to help your body burn fat. Plus, you take it four times a day, so the effects are intended to last all day long.


Best Stim-Free Appetite Suppressant
While people may think that stim-free appetite suppressants don’t have what it takes to provide results, Jacked Factory Lean-XT aims to prove them wrong. Its natural ingredients are designed to curb hunger, boost metabolism, and feel a light energy boost.


Jacked Factory Lean-XT
If you’re trying to avoid stimulants, finding an appetite suppressant can be challenging. Luckily, Jacked Factory Lean-XT offers an all-natural thermogenic fat loss supplement. Its caffeine- and stimulant-free formula sets it apart, making it an ideal choice for those who are sensitive to caffeine or prefer to avoid stimulants.






Jacked Factory Lean XT





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This product contains 750mg of l-carnitine, 500mg of green tea extract, and 180mg of coleus forskohlii and forskolin. Plus, it has Bioperine to potentially help with absorption.









The stim-free formula includes key ingredients, such as forskolin, green tea extract, and acetyl l-carnitine, all of which may boost metabolism, control hunger, and help your body utilize fat for fuel and energy. The addition of bioperine can help your body digest and absorb the active ingredients, and put them to work burning fat.


Specs
  • Active Ingredients: Forskolin, green tea extract, acetyl l-carnitine
  • Price: $31.49
  • Capsules: 60
  • Serving Size: 2 capsules 1-2x per day
Pros
  • It is caffeine-free and stimulant-free, which makes it suitable for individuals who are sensitive to caffeine or prefer to avoid stimulants.
  • The bioperine in this supplement can help the body absorb more of the active ingredients, as well as possibly boosting metabolism.
  • Since this is stimulant-free, you can stack it with other thermogenic supplements without overloading on caffeine.
Cons
  • The lack of stimulants in the product means you won’t be getting a huge jolt of energy.
  • The bioprene comes from black pepper fruit extract, so if you’re allergic to black pepper, you should avoid this supplement .
If you are seeking a non-stimulant appetite that contains a load of potentially fat-burning ingredients, Lean-XT should be high on your list. With ingredients designed to help your body burn fat and provide a mild to moderate dose of energy, you can get all the burn without any of the jitters.


Best Appetite Suppressant and Fat Burner
Among the myriad options available in the market, Transparent Labs Fat Burner is one of the best appetite suppressants and fat burners. It is well crafted using the highest-quality ingredients, and can effectively curb cravings and enhance thermogenesis (which can ultimately promote a more efficient fat-burning process).


Transparent Labs Fat Burner
Transparent Labs Fat Burner’s main appetite suppressant is 5-HTP, a product of the plant griffonia simplicifolia. It’s a serotonin precursor, and studies have shown that serotonin may increase your satiety when you eat. (2)




10% Off






Transparent Labs Fat Burner





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This fat burner contains research suggested ingredient amounts of green tea extract, as well as synephrine, and HTP-5, which may suppress your appetite.









In addition, this product also has green tea extract, capsimax, and 125mg of caffeine — ingredients that may support metabolic rate and improve your energy and focus, so you can push harder in the gym and burn off more fat there as well. The inclusion of bioperine may also help you absorb more of these ingredients.


Specs
  • Active Ingredients: 5-HTP, green tea leaf extract, forslean, natural caffeine, l-theanine, Capsimax, bioperine
  • Price: $54.99
  • Capsules: 60
  • Serving Size: 2 capsules 2x per day
Pros
  • This product contains ingredients that support and optimize metabolic function, helping your body burn more calories, potentially leading to weight loss.
  • The 5-HTP included may increase your serotonin levels, helping you feel fuller when you eat.
  • It may help to enhance energy levels and improve focus, which can help you push harder and burn more calories when you exercise.
Cons
  • There may be too much caffeine in this supplement for people who are sensitive to stimulants.
  • It is slightly more expensive than some comparable products.
  • The bioperene is made from black pepper extract, so if you’re allergic to black pepper, this isn’t the supp for you.
If you’re looking for a solid appetite suppressant and fat burner, Transparent Labs Fat Burner nails it with the combination of 5-HTP, which may help you feel fuller when you eat. Ingredients like green tea extract, capsimax, corslean, caffeine, and l-theanine are also intended to help you burn off fat.


Best All Natural Appetite Suppressant
Many appetite suppressants are full of ingredients with long, hard-to-pronounce names you may not have heard of. Thankfully, Swolverine has created a natural product called Swolverine Therm that contains all-natural ingredients, like green tea leaf, yerba mate, garcinia cambogia (okay, that one’s kind of tough to say), guarana, and forskolin.


Swolverine Therm
Looking for an all-natural appetite suppressant? Swolverine Therm contains natural ingredients that are meant to curb your appetite, like 50mg of yerba mate and 100mg of cocoa extract. All of the ingredients are derived from plants and animals, like the 150mg of iodine (derived from kelp), which may boost metabolism, and 125mg of chitosan (derived from crustacean shells), which studies show may contribute to weight loss (3). There are also zero preservatives or fillers, which means you’re only paying for products that contribute to weight loss.






Swolverine Therm Fat Burner





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The ingredient list is pretty robust, but most of the ingredients are geared towards thermogenesis. Some of the ingredients that help with this are green tea leaf extract, cayenne pepper, caffeine, cocoa extract, and garcinia cambogia.









In addition, 20 clinical ingredients like guarana, cayenne pepper, forskolin, and garcinia cambogia, all work together to potentially speed up your metabolism and help you burn fat. Therm also has 10mg of chromium and 50mg of gymnema sylvestre, which can help regulate blood sugar and regulate “bad” cholesterol. . And you won’t have to pay through the nose for a bottle, since it only costs about $0.40 per serving.


Specs
  • Active Ingredients: Chromium, gymnema sylvestre, green tea leaf, yerba mate, garcinia cambogia, guarana, forskolin
  • Price: $34.99
  • Capsules: 90
  • Serving Size: 1 tablet 1-2x per day
Pros
  • This product utilizes Guarana which contains up to four times the amount of caffeine than coffee and can create long-lasting sustained energy.
  • This supp is entirely made up of all-natural ingredients.
  • For less than $35, this product has a lot of potential benefits for a small price.
Cons
  • This formula contains shellfish, so people who are allergic cannot take it.
  • The stimulants in Therm may cause sleep disturbances if taken too close to bedtime.
  • If you’re looking for a huge boost of energy, you may want more than 100mg of caffeine.
Swolverine’s Therm provides a comprehensive blend of natural ingredients like chromium, yerba mate, and forskolin that are designed to reduce your hunger and speed up your metabolism. If you’re looking for an all-natural way to cut fat and curb your appetite, Therm could be the way to go.


Best Appetite Suppressant for Men
When men cut weight, energy levels can drop, which can lead to sluggish workouts (and a temptation to up the calories). Instant Knockout helps combat this with ingredients that can help men boost their energy levels while you cut, so they can keep their hard-earned muscle while shedding fat.


Instant Knockout
One of men’s biggest concerns when cutting weight, whether it’s to make weight for a fight or to make those abs pop, is losing muscle because their calorie deficit makes them too fatigued to hammer at the gym. Good news — Instant Knockout has 300mg of caffeine, which works with the cayenne pepper extract and vitamin B6 to not only help boost your metabolism, but also to help you push through those calorie-deficit workouts. The B6 is particularly great for men as they are more likely to have a vitamin B deficiency than women. Not to mention, Instant Knockout was formulated and designed specifically for men.






Instant Knockout





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Instant Knockout is a comprehensive fat burner that contains green tea extract, as well as cayenne pepper seeds and glucomannan. Plus, this supplement also includes caffeine, theanine, and black pepper extract.









As far as appetite suppression goes, 1,800mg of glucomannan will expand as it absorbs water in your stomach, potentially making you feel fuller. In addition, the vitamin D3, vitamin B12, and green tea extract, all may help boost your metabolism and burn off excess fat. (4)(5)


Specs
  • Active Ingredients: Glucomannan, vitamin D3, vitamins B6 & B12, caffeine, l-theanine, green tea extract
  • Price: $65.00
  • Capsules: 120
  • Serving Size: 1 capsule 4x per day
Pros
  • The high dose of caffeine may help men push hard through calorie-deficit workouts.
  • Studies show that men are more susceptible to vitamin B deficiency, so the inclusion of vitamins B3, B6, and B12 is ideal for men — especially when it comes to increasing energy for calorie deficit workouts. (5)
  • The addition of green tea extract may help digest carbs and reduce bloat.
Cons
  • At over $0.50 per serving, this is pricier than other supplements on this list.
  • 300mg of caffeine might be too much for people who are sensitive to it.
Any man who’s done a cut knows the frustration of pushing through a workout when you are in a calorie deficit. Fortunately, Instant Knockout has a stack of ingredients to give you the energy to push through that deficit to get in a good workout. Plus, it has vitamins B3, B6, and B12, vitamins, which are more commonly deficient in men than women.


Best Appetite Suppressant for Women
A great appetite suppressant for women should address their specific needs and challenges regarding weight loss, namely, the ability to reduce food cravings. Leanbean addresses this with a high dose of glucomannan to keep you feeling full, as well as potassium, an electrolyte which may reduce emotional eating.


Leanbean
Food cravings are a huge challenge for women who want to cut weight. Designed specifically for women, Leanbean contains a blend of natural ingredients carefully selected to target appetite control and reduce cravings. For example, ingredients like 3,000mg of glucomannan, garcinia cambogia, and raspberry ketones are designed to work together to promote a feeling of fullness. This fullness can help reduce the food cravings that often plague women who are on a diet.






Leanbean





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With less caffeine than a cup of, Leanbeans formula, marketed to women, suppresses your appetite and promotes a healthy metabolism.









This supplement includes potassium, which can lower blood pressure and reduce stress, decreasing the likelihood of emotional eating. It’s on the pricier side at around $2.00 per serving, but if you’re looking for a multifaceted fat-burner designed specifically for women, Leanbean is a great choice.


Specs
  • Active Ingredients: Potassium, konjac fiber (glucomannan), choline, chromium picolinate,
  • garcinia cambogia, green coffee bean extract, turmeric, acai berry
  • Price: $59.99
  • Capsules: 180 (30 servings)
  • Serving Size: 2 pills 3x per day
Pros
  • Choline and Vitamin B6 help support hormone regulation and help maintain a balanced metabolism.
  • It provides natural energy-enhancing ingredients such as green coffee beans and turmeric to provide a gentle energy boost without the crash associated with stimulants.
  • The potassium may improve moods and reduce emotional eating.
Cons
  • It has a higher price point than other market appetite suppressants.
  • Women whose stomachs don’t respond well to high doses of fiber should steer clear of this product.
  • Women who rely solely on the supplement without making necessary lifestyle changes may not experience optimal results.
Leanbean stands out as a great appetite suppressant for women due to its ingredients that can decrease appetite, discourage emotional eating, and boost metabolism. It’s on the pricey side, but if you’re looking for a multifaceted approach to cutting weight, it’s a solid option.



When it comes to finding the best appetite suppressant to boost metabolism, Swolverine Therm stands out as a top contender. This supplement has loads of ingredients designed not only to curb your appetite, but to help your body burn fat while you rest.


Swolverine Therm
While it still has some ingredients like yerba mate and cocoa extract that are intended to curb your appetite, Swolverine Therm places a heavy emphasis on increasing your metabolism. Ingredients like green tea leaf, garcinia cambogia, and cayenne pepper can potentially help increase calorie burn and enhance fat oxidation.






Swolverine Therm Fat Burner





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The ingredient list is pretty robust, but most of the ingredients are geared towards thermogenesis. Some of the ingredients that help with this are green tea leaf extract, cayenne pepper, caffeine, cocoa extract, and garcinia cambogia.









These ingredients are designed to increase thermogenesis, which works by raising the body’s internal temperature, helping it to burn more calories as it works to cool down. Many of the supplements on this list have an emphasis on increasing energy and suppressing appetite, while Therm places its focus on cranking up that metabolism and burning away fat.


Specs
  • Active Ingredients: Green tea Leaf, yerba mate, garcinia cambogia, guarana, forskolin
  • Price: $34.99
  • Servings: 90
  • Serving Size: 1 tablet 1-2x per day
Pros
  • It has a blend of ingredients like guarana, yerba mate, and gymnema sylvestre that can effectively suppress appetite and curb cravings.
  • The potent doses of guarana cambogia, cayenne pepper, and forskolin are meant to ramp up your metabolic rate, increasing calorie burn and improving fat oxidation.
  • At $0.40 a serving, this supplement won’t break the bank.
Cons
  • Stimulants like guarana and green tea leaf may not be suitable for individuals sensitive to caffeine or other stimulants.
  • If you’re looking for mood enhancement ingredients, you’ll find more in other options on this list.
For those seeking a combination appetite suppressant and metabolism booster, Swolverine Therm is a standout choice. Its focus on speeding up metabolism with ingredients like garcinia cambogia and cayenne pepper can potentially rev up your calorie burn, helping you shed fat.


Best Appetite Suppressant Pills
If you’d rather take your supplements in pill form, take a good hard look at Huge Supplements Eliminate. With ingredients designed to decrease appetite, burn off fat, and give you a boost of energy, Eliminate tops our list of the best appetite suppressant pills.


Huge Supplements Eliminate
There are a lot of reasons people choose pills over powdered supplements — you don’t have to mix them, they don’t take up a lot of space in a workout bag, and they don’t make a huge mess if you drop them on the floor. This appetite suppressant pill stands out thanks to its relatively easy dosage. Instead of taking these pills throughout the day, you only need to take four gelatin caps once in the morning.






Huge Supplements Eliminate





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Packed with carnitine, 5-HTP, theanine, caffeine, and green coffee bean extract, this product is a great option for those who want a robust list of ingredients in their supplement — it contains 13 dedicated fat burning ingredients.









As far as appetite suppression goes, 5-HTP is the star of the show here. As a precursor to serotonin, it can help you feel more satisfied and less likely to overeat. The other ingredients listed, like paradoxine, green coffee bean extract, and acetyl-l-carnitine, work in various ways to help speed up your metabolism and help your body burn off fat. Plus, the 250mg of caffeine can give you an extra jolt of energy throughout the day.


Specs
  • Active Ingredients: Green tea extract, 5-HTP, acetyl-l-carnitine, paradoxine, forskolin, caffeine anhydrous
  • Price: $49.95
  • Servings: 30
  • Serving Size: 4 tablets 1x per day
Pros
  • The 5-HTP included here may provide you with a feeling of satiety, which can lead you to eat less.
  • Having these in pill form makes it much easier to take them at the gym or office.
  • Ingredients like paradoxine and forskolin may help boost your body’s metabolism.
Cons
  • These are gelatin capsules, which won’t work for people who want to avoid animal products.
  • If you’re sensitive to caffeine, the 250mg in this supplement may be too much.
When it comes to choosing an appetite suppressant pill, the combination of ingredients designed to help you eat less and burn more fat make Huge Supplements Eliminate an outstanding choice. Plus, pills are always easier than powders to grab and take with you on the go.


How We Chose The Best Appetite Suppressants
There are a lot of supplements that claim to be effective fat-burning supplements, but it can be hard to separate fact from hype. So we made it a point to focus on ingredients that had studies backing their effectiveness, that they were included in substantial doses, and that the prices were fair for what we were getting.


Ingredients
When selecting the best appetite suppressants based on ingredients, we looked to see whether the ingredients had any studies that showed a measure of efficacy. We looked for ingredients such as natural plant extracts, dietary fibers, and thermogenic compounds that have been clinically studied for their ability to reduce hunger and promote satiety. We also considered including metabolism-boosting ingredients that can enhance weight loss efforts.


Dosage
One huge consideration was the dosage of each ingredient. Since these supplements are intended to decrease appetite, we looked at the amount of things like glucomannan fiber, which expands in your stomach to help you feel full.


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Credit: Aleksey Korchemkin / Shutterstock
We included supps with higher doses like 1,800mg or above, or with supplements that had lower doses, we made sure they were bolstered by other appetite suppressants like 5-HTP.


Price
We also took into account the affordability and overall value of each product. We evaluated the price range of different appetite suppressants, and compared them against factors such as quality, effectiveness, and ingredients. While some supplements on this list are more expensive than others, we tried to ensure that each one is worth its cost.


Benefits of Appetite Suppressants
There are many benefits of adding appetite suppressants to your weight loss plan. They can help with both weight loss and health goals thanks to their potential to improve energy levels, boost metabolism, and, of course, suppress your appetite.


Increased Energy
Certain ingredients found in appetite suppressants, such as caffeine or green tea extract, have natural energizing properties and can stimulate the central nervous system, increasing alertness and reducing fatigue.(6) These supplements can help stabilize blood sugar levels, preventing daily energy crashes and fluctuations.


Improved Metabolism
Appetite suppressants can provide an added boost to metabolic function. Some ingredients in these supplements like cayenne pepper have thermogenic properties, which can increase the body’s calorie-burning capacity. (1) This can help individuals achieve their weight loss goals more efficiently by supporting fat burning and boosting overall energy expenditure.


Decreased Appetite
Using appetite suppressants with ingredients like glucomannan can help to enhance feelings of fullness and satiety. (4) Promoting a sense of satisfaction after meals can help individuals stick to portion control and make healthier food choices. This can lead to more balanced and controlled eating habits.


How Much Do Appetite Suppressants Cost?
Typically, appetite suppressants range in price from about $35 to $70 per container. The cost can fluctuate based on factors like the ingredients, dosage, and amount of servings per container. The delivery system can be a factor as well, as pills can be pricier than powders.





Best Appetite Suppressant Overall
Instant Knockout
$65 for 120 capsules


Best Stim-Free Appetite Suppressant
Jacked Factory Lean-XT
$31.49 for 69 capsules


Best Appetite Suppressant and Fat Burner
Transparent Labs Fat Burners
$65 for 120 capsules


Best All Natural Appetite Suppressant
Swolverine Therm
$54.99 for 60 capsules


Best Appetite Suppressant for Men
Instant Knockout
$65 for 120 capsules


Best Appetite Suppressant for Women
LeanBean
$59.99 for 180 capsules


Best Appetite Suppressant to Boost Metabolism
Swolverine Therm
$54.99 for 60 capsules


Best Appetite Suppressant Pills
Huge Supplements Eliminate
$49.96 for 120 capsules



The prices of these products range greatly. Before you commit to an appetite suppressant, make sure that it has ingredients that will help you hit your goal, whether it’s to eat less in general, burn off more fat, or keep your energy up at the gym in a calorie deficit. Also, if a brand seems more expensive, take a look at how many servings it has. It may just be that it has more servings per container and may actually cost less per serving.


What to Consider Before Buying Appetite Suppressants
When considering the purchase of appetite suppressants, it’s important to know that these supplements are intended to supplement a good workout and proper nutrition, not replace them. They won’t do you any good if you’re eating garbage and not working out. If you have nutrition and exercise down and you still want help cutting weight, consider why you’re taking one. Are you trying to eat less? Do you want to speed up your metabolism? Plus, keep in mind that you may be sensitive to some of the ingredients and make sure to avoid those. Finally, decide how much you’re willing to spend.


Proper Nutrition and Exercise
If you don’t have your eating habits on point and you’re not exercising regularly, you shouldn’t be considering appetite suppressants yet. While these may help you lose extra weight, they won’t do a thing if you’re not taking care of the fundamentals.


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Credit: Alexander Raths / Shutterstock
Find a nutrition plan that you can stick with and start exercising regularly, and if you still need help dropping some pounds, then you can start looking for supplemental help.


Sensitivity to Ingredients
When considering the purchase of appetite suppressants, make sure that you don’t have any allergies or sensitivities to any of the ingredients in the products you’re considering. Many appetite suppressants have ingredients like cayenne or black pepper extracts, which can cause allergic reactions in some people. Also, many of these products contain caffeine, sometimes in high doses. If you’re particularly sensitive to caffeine or stimulants, you may want to steer clear of those ones.


Budget
Buying supplements can take a bite out of your wallet. Appetite suppressants are no exception, so it is crucial to consider what your budget is. They can vary in price, so it’s essential to determine a budget and stick to it. Keep in mind that higher-priced products don’t necessarily guarantee better results, so it’s important to find a balance between affordability and quality.


Goals and Needs
Take some time to think about your overall goals and what aspects of an appetite suppressant are most likely to help you achieve them. Determine whether your primary focus is reducing cravings, boosting metabolism, or promoting weight loss. Different products may have varying mechanisms of action and ingredients, so understanding your goals will help you select...

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