It’s not a testosterone blocker at all. It blocks 5-alpha reductase, an enzyme that converts testosterone to DHT. It can actually increase serum testosterone by more than 10%.
As for DHT, that hormone doesn’t appear to have much significance for adult males. It’s critically important in puberty, though!
As for DHT, that hormone doesn’t appear to have much significance for adult males. It’s critically important in puberty, though!