Men's Sexual Health

Does Finasteride for Hair Loss Cause Permanent Erectile Dysfunction?

Linda Girgis | MD

Medically reviewed by Linda Girgis | MD, Girgis Family Medicine on August 21st, 2026.

Finasteride for hair loss does not typically cause permanent erectile dysfunction. Clinical studies show that sexual side effects from finasteride occur in 2-3% of men and are usually reversible after discontinuing the medication. Most men who experience erectile dysfunction while taking finasteride see symptoms resolve within weeks to months of stopping treatment. However, a small subset of patients report persistent sexual symptoms lasting beyond discontinuation, though the exact prevalence and causal relationship remain debated in medical literature. The FDA requires finasteride labeling to include warnings about potential sexual side effects, but permanent dysfunction is considered rare. If you experience sexual side effects while taking finasteride, consult your healthcare provider to discuss whether continuing treatment is appropriate for your situation.

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