A detailed breakdown for United States — including efficacy, cost, side effects, and how to get a prescription online.
Find Out Which Is Right for You →Finasteride is the standard first-line choice for male pattern hair loss with excellent long-term safety data. Dutasteride is more potent (blocking both enzyme types) and may be appropriate for men with aggressive hair loss or those who don't respond to finasteride — but with a somewhat higher side effect profile. Start with finasteride; consider dutasteride if response is inadequate after 12 months.
⚕️ This comparison is for informational purposes only. Consult a licensed physician before choosing any medication. Individual responses vary.
Dutasteride reduces DHT more aggressively (~94% vs ~70% with finasteride) which generally translates to stronger hair retention. However, both are highly effective and finasteride's long track record makes it the preferred first-line choice.
Yes, with your physician's approval. Some men who plateau on finasteride see additional improvement switching to dutasteride. The transition typically involves stopping finasteride and starting dutasteride at standard dose.
Both can cause reduced libido, erectile dysfunction, or ejaculatory changes in a minority of men (1–3% in clinical trials). These effects are generally reversible upon stopping the medication. Dutasteride's longer half-life (5 weeks vs 6 hours) means side effects may persist longer after stopping.
Take our free quiz and get a personalized recommendation from a licensed United States physician.
Start Free Quiz →