Finasteride and Male Fertility
Medically reviewed by [Reviewer Name, MD] | Last reviewed: August 2026 | Editorial policy
Bottom line: Finasteride can reduce semen volume and, in some men, semen parameters including sperm count and motility. These effects are generally reversible after stopping. Men actively trying to conceive should discuss timing with their urologist; a brief cessation period may be recommended depending on baseline fertility status.
What the Evidence Shows
| Parameter | Typical finding on finasteride | Reversibility |
|---|---|---|
| Semen volume | Modest reduction in some men | Reverses after stopping |
| Sperm count | Generally within normal range; rare azoospermia reported | Reverses in most cases |
| Sperm motility | Some studies show modest reduction | Reverses after stopping |
| Sperm morphology | Mixed findings; no consistent adverse signal | N/A |
Guidance for Men Planning Conception
- If fertility is a current or near-term priority, discuss with your urologist before starting finasteride
- Men already on finasteride who plan to conceive should discuss whether and when to stop with their provider — typically 3–6 months before trying is suggested, though evidence on optimal cessation timing is limited
- Men with baseline subfertility (low sperm count, poor motility) should be particularly cautious
- For men with normal baseline fertility, the risk of clinically significant impairment is low but not zero
See: Finasteride fertility research | Long-term safety | What happens when you stop