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Human prostatic steroid 5 alpha-reductase isoforms--a comparative study of selective inhibitors.
This study suggests that Fenistride (active ingredient of Propecia) only inhibited the Type 2 form of 5 alpha reductase where Saw Palmetto extract inhibited both type 1 and 2 forms of 5 alpha-reductase and was more potent than Fenistride.
Testosterone metabolism in primary cultures of human prostate epithelial cells and fibroblasts.
This Study shows that Fenistride and 4-MA inhibited the formation of some testostrone Metabolites (including DHT), where as Saw Palmetto inhibited the formation of all the Testostrone metabolites studied.
The effect of Permixon on androgen receptors.
This study shows that Saw Palmetto extract was able to effectively reduce Binding of Testostrone and DHT to their receptors on various tissues.
Revivogen's natural ingredients were selected because they have been scientifically proven to block DHT more effectively than synthetic ingredients without side effects.
Here you can find Revivogen before-and-after photos and real stories from men and women just like you.