Minoxidil
What it is
Minoxidil is a vasodilator used in androgenetic alopecia. Topical formulations are available over the counter; low-dose oral minoxidil is prescribed off-label and requires clinical oversight.
How it is used
Topical is applied to the scalp daily. Oral is taken at low doses well below its cardiovascular dosing and requires monitoring of blood pressure and fluid status.
What a provider evaluates first
- Blood pressure and cardiovascular history, particularly for oral use
- Scalp condition and any dermatitis
- Concurrent antihypertensive medication
Considerations and monitoring
- Oral use is off-label and requires blood-pressure monitoring
- Increased hair growth elsewhere on the body is commonly reported with oral use
- Shedding early in treatment is a recognised phase, not a treatment failure
- Benefit is maintained only while treatment continues
Questions about minoxidil
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.
Part of Hair & Skin.