Well, i used at this moment only 4 times in workout days taking it pre-WO. i can say that i was freaking out how hard my muscles got. Never before i had this hardness in my muscles. I am taking 60mcgr bilateral injection pre-WO and simple is amazing. I am also in in a cycle of bolde/susta/tren e that i will finish soon. also taking CJC no DAC + GHRP-2. Let's see after a month the results!! Thanks Presser for the quality of the product. Is very difficult find a good IGF1 nowadays!!