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Finasteride
genericFinasteride — FDA-approved for male pattern hair loss (1997)
$8–$27/mo
/month
Dosing
1mg oral tablet taken once daily
Type
Generic
Key Fact
In clinical studies, finasteride appeared to stop further hair loss in approximately 83% of men, and roughly 66% experienced some degree of visible regrowth after two years of continuous use.
Price
$8–$27/mo
Finasteride is widely considered the gold standard oral treatment for male pattern hair loss. Originally developed to treat enlarged prostate (as Proscar at 5mg), the 1mg dose was approved by the FDA in 1997 specifically for androgenetic alopecia under the brand name Propecia. It is one of only two FDA-approved medications for hair loss, and it remains one of the most studied and prescribed options available. By addressing DHT — the key hormonal driver of follicle miniaturization — finasteride may offer a targeted approach that many men find effective when used consistently over time.
Where to Get Finasteride
Compare providers offering finasteride — ranked by our editorial team
Hims
Generic finasteride 1mg with free online consultation; quarterly billing available
$22/mo
/month
Keeps
Includes finasteride with ongoing provider support and progress photo tracking
$27/mo
/month
How Finasteride Works
Finasteride works by inhibiting the Type II 5-alpha reductase enzyme, which is responsible for converting testosterone into DHT in certain tissues including the scalp. DHT is considered the primary androgen behind follicle miniaturization in genetically susceptible men. By reducing circulating DHT levels by approximately 60–70%, finasteride may help slow or halt the progressive shrinking of hair follicles. Over time, some follicles that have not yet fully miniaturized may recover enough to produce thicker, more visible hair. Most men who respond to finasteride tend to notice results within 3 to 6 months, though full effects can take up to a year or more of daily use.
Side Effects
Common
- • Decreased libido (reported in roughly 1–2% of users in clinical trials)
- • Mild erectile changes (reported in a small percentage of users)
- • Reduced ejaculate volume
Serious (Rare)
- • Depression or mood changes (rare; consult a provider if experienced)
- • Allergic reactions such as rash, hives, or swelling (very rare)
- • Breast tenderness or enlargement (rare)
- • Persistent sexual side effects after discontinuation have been reported by some users, though this remains a topic of ongoing research
Who Is Eligible
Finasteride is FDA-approved for use in adult men only. It is not approved for use in women or children. Women who are or may become pregnant should avoid handling crushed or broken tablets, as finasteride can be absorbed through the skin and may pose risks during fetal development. A prescription is required, and a licensed provider will typically review your medical history and current medications before prescribing.