Finasteride (oral)
The most proven pill for stopping male pattern hair loss. Blocks the hormone (DHT) that shrinks hair follicles.
Strong evidencePrescription
The cheapest legitimate way
Get a prescription from your doctor or a low-cost telehealth visit, then fill generic 1 mg at a discount pharmacy like Cost Plus Drugs, or use a discount card.
Smart path~$5–$10/mo + one-time prescription visit
Typical brand price~$25–$35/mo via subscription brands
Prices are estimates based on typical US cash prices. They change often, so check before you buy.
- Evidence
- Strong. Backed by large, well-designed studies.
- How it works
- Finasteride blocks the enzyme that converts testosterone into DHT. Lowering scalp DHT slows or stops follicles from shrinking.
- What results look like
- In major studies, most men stopped losing hair and many regrew some. Works best on the crown and when started early.
- Time to results
- Shedding slows in 3–6 months. Judge results at 12 months.
- Side effects and downsides
- Sexual side effects (lower libido, erectile issues) in a small percentage of men
- Mood changes reported. The FDA label now warns about depression.
- Effects stop for most men when they stop taking it, but some report lasting symptoms
- Benefits stop if you stop taking it
- Best for
- Men with genetic (pattern) hair loss who are comfortable with a prescription after talking to a doctor.
- Sources
- Kaufman et al., 1998, J Am Acad Dermatol
- FDA Propecia prescribing information
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