Hair · Article
Finasteride and Testosterone: What Actually Happens
Finasteride doesn't lower testosterone. It raises it slightly while lowering DHT. Here's the real biochemistry.
The numbers
On finasteride 1 mg daily: total testosterone often rises by 10–15% because less is being converted to DHT. DHT itself drops by ~60%.
Does this matter for libido?
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Frequently asked questions
Does finasteride lower testosterone?
No. Slightly raises it.
Can I take finasteride on TRT?
Yes. Many men do. TRT for energy, finasteride for hair.
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