community Dutasteride 0.5 mg/day lowers scalp DHT levels by only 50% (but 2.5 mg/day lowers scalp DHT by 80%).
Dutasteride at 2.5 mg/day reduces scalp DHT by 80%, while 0.5 mg/day reduces it by 50%, with minimal difference in side effects. Users often combine it with finasteride, RU58841, and minoxidil for better hair loss management, though side effects like dry skin and pimples are noted.