community He used Dutasteride for 20 YEARS: TL;DR Slight gains and largely stable for 20 years.
John has experienced slight hair gains and stability over 20 years using Dutasteride, which is more effective than Finasteride in reducing scalp DHT and maintaining hair. Dutasteride at 0.5mg daily has a similar side effect profile to Finasteride, but at higher doses, it may increase the risk of sexual side effects.