Medically reviewed by Dr. Hootan Zandifar, MD, FACS for the ZMDHair restoration team · 2026-10-16
Quick answer: Finasteride is an oral prescription medication that lowers DHT, the hormone that drives male-pattern hair loss, and can slow shedding and help regrow hair for many men. It takes several months to work, must be continued to maintain results, and should be used under medical supervision because of potential side effects. It’s often combined with other treatments.
How finasteride works
Finasteride reduces DHT, the hormone most responsible for shrinking hair follicles in male-pattern loss. By lowering DHT, it can slow or halt progression and help regrowth.
What to expect
Results build over several months and require ongoing use — stopping reverses the benefit. Many men respond well, especially when started earlier in the loss process.
Safety and supervision
Finasteride is a prescription medication with potential side effects that should be discussed with a physician. Medical supervision ensures it’s appropriate for you and monitored.
Part of a bigger plan
Finasteride is often combined with minoxidil, PRP, or a transplant depending on your pattern and goals — a physician designs the right combination.
Key points
- Prescription oral med that lowers DHT
- Slows loss and can regrow hair over months
- Must be continued to maintain results
- Use under medical supervision; often combined
Frequently asked questions
Does finasteride work?
It helps many men slow loss and regrow hair, especially when started early.
Is it safe?
It’s a prescription medication with potential side effects — use under medical supervision.
How long until it works?
Typically several months of consistent use.
Can I combine it with other treatments?
Yes — often with minoxidil, PRP, or a transplant; a physician advises.
Related on this site: Hair restoration · minoxidil · receding hairline causes.
Talk to a specialist in Beverly Hills
To find out if finasteride fits your hair-loss plan, Dr. Zandifar sees patients in Beverly Hills and Santa Monica and reviews your anatomy in person before recommending anything. Request a consultation.
This article is provided by ZMDHair, the hair- and brow-restoration practice of Dr. Hootan Zandifar, MD, FACS. Educational information only, not medical advice; every plan is individualized at a consultation.
