Well, first it is spelled avodart. That makes searching easier. Taking testosterone will increase your PSA, so don't bother to get a PSA if your are on the juice. Same thing with creatine. It skews your kidney tests like bun/creatinin. Giving a false result. There is an article in Mus. dev. mag.,Jan.,2010 that discusses avodart use, There is an enzyme called 5 alpha-reductase. This enzyme converts testosterone to the more androgenic DHT. Avodart(dutatsteride) is called a 5 alpha-reductase inhibitor. It blocks the enzyme from converting test to DHT. Studies have shown that use of avodart will increase testosterone levels in the blood stream. It's main use is to decrease the size of the prostate by reducing levels of DHT. Which is the hormone that causes the prostate to enlarge.
One negative effect mentioned in the article was that avodart and proscar reduced levels of other hormones in the study. Mainly neurosteroids that alter emotions and mood. In my personal experience with avodart , I never noticed any mood changes.