Minoxidil: What It Is and Why It's Used (flagship)

Origin

Minoxidil was developed as an oral antihypertensive drug in the 1950s and 1960s by Upjohn, and approved by the FDA for treating high blood pressure in 1979. One of its side effects — hypertrichosis (unwanted hair growth) — was observed in patients, and researchers investigated whether this could be turned into a treatment for hair loss. Topical minoxidil was approved by the FDA for androgenetic alopecia in 1988, initially by prescription only, then as an OTC product in 1996.

Why It's Used

Its mechanism of action as a hair growth treatment is not fully understood, even after decades of use. It appears to extend the hair follicle's growth phase (anagen) and may increase blood flow to the follicle. It does not address the hormonal mechanism underlying androgenetic alopecia. In the United States, minoxidil-containing products are regulated as OTC drugs, not cosmetics.

Elsewhere

Minoxidil remains in use as an oral antihypertensive drug for difficult-to-treat hypertension. Low-dose oral minoxidil for hair loss is an active area of clinical research. The compound is also used in research settings studying potassium channel activation.

What the Framework Sees

Question Zero, extended.

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