Finasteride vs Minoxidil
These are often framed as alternatives, but they address different parts of the problem and are commonly prescribed together. Finasteride addresses the hormonal driver; minoxidil acts on the follicle directly.
| Dimension | Finasteride | Minoxidil |
|---|---|---|
| Mechanism | Reduces conversion of testosterone to DHT | Vasodilator acting at the follicle |
| Route | Oral, or topical in some protocols | Topical, or low-dose oral off-label |
| Addresses the cause | Yes — the androgenic driver | No — supports the follicle |
| Key considerations | Fertility, mood, effect on PSA readings | Blood pressure monitoring for oral use |
| Early shedding phase | Less commonly reported | Recognised and expected early on |
| If stopped | Benefit is lost | Benefit is lost |
| Use in women | Not for those who are or may become pregnant | Topical formulations are used in women |
How a provider actually decides
Most protocols use them together because they act on different mechanisms. Which combination is appropriate depends on your pattern of loss, fertility intentions, blood pressure and what other causes have been excluded — thyroid function and ferritin in particular.
Read more on each
Finasteride
Finasteride is a 5-alpha reductase inhibitor used in androgenetic alopecia. Learn how it works and what a provider discusses before prescribing.
Minoxidil
Minoxidil is used in hair loss both topically and, off-label, at low oral doses. Learn the difference and what monitoring each requires.
Related questions
Finasteride or minoxidil for hair loss?
They work differently and are often used together. Finasteride reduces conversion of testosterone to DHT, addressing the hormonal driver of pattern hair loss. Minoxidil is a vasodilator applied topically or, off-label, taken at low oral doses. Finasteride carries considerations around fertility and mood; oral minoxidil requires blood-pressure monitoring. Benefit from either is maintained only while treatment continues.
How long before hair-loss treatment shows any change?
Hair grows slowly and cycles over months, so assessment of response is measured in months rather than weeks. Providers generally review at defined intervals rather than expecting early change. An initial increase in shedding after starting minoxidil is a recognised phase and is not a sign the treatment has failed. Photographic tracking at consistent intervals is more reliable than impression.