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Topical vs oral finasteride: which is better?

Reviewed by the glpzoom Editorial Team against primary clinical sources — FDA labeling, peer-reviewed trials, and specialty-society guidelines.
Content current as of June 2026; updated when guidance or availability changes.
Oral finasteride (1mg daily) has the longest track record, lowest cost (~$10-30/mo generic), and the most-studied efficacy data. The trade-off is potential systemic side effects, most notably sexual side effects (libido reduction, erectile dysfunction) reported by ~2-4% of trial users. Topical finasteride (typically 0.25% solution applied to scalp daily) delivers DHT-blocking effect at the scalp with substantially lower systemic absorption — clinical data suggests comparable scalp efficacy with reduced sexual side-effect risk. Costs more ($40-80/mo, compounded), not typically covered by insurance. Some patients tolerate topical when oral caused side effects; others want the convenience of a daily pill. Combining topical finasteride with topical minoxidil is a common protocol. For patients with no side effects on oral, switching to topical may not be worth the cost increase.

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Drugs referenced

Related questions

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