Saw Palmetto
Serenoa repens
Studied for: Hair Loss
Hair Loss
What the research found
Small clinical trials and studies show modest improvements in hair density and overall hair count with daily use, though research is less robust than for FDA-approved treatments. Saw palmetto lowers DHT levels by about 20% to 40%. In comparison, prescription drugs like finasteride block DHT by roughly 60% or more.
Dose used in studies
5 mL of 20% oil lotion applied once daily for 16 weeks. oral: 100 mg to 320 mg per day
Side effects reported
Well tolerated topical, Not recommended for children, pregnant people, or anyone breastfeeding. Mild gastrointestinal complaints for supplements.
References
Sudeep2023
Not medical advice
Trials are run on specific people, for specific reasons, over a set period. Your medications, conditions and bloodwork can change what is safe for you. Ask a doctor or pharmacist before starting.