Drug Repurposing: Accelerating New Therapeutic Discoveries From Old Molecules (1990–2025)

Rapamycin, finasteride, and minoxidil are discussed as a strategy for hair loss prevention and reversal. Pulsed dosing of rapamycin is suggested to avoid conflicting effects with minoxidil.

Minoxidil may suppress androgen activity in hair follicles, potentially aiding in hair growth and prostate cancer treatment. Users discuss the effectiveness of minoxidil and finasteride for hair maintenance and regrowth, with some preferring topical applications over oral due to safety concerns.

Minoxidil was used as a hair treatment by crushing hypertension tablets and mixing them with other ingredients. It was noted to thicken existing hair more than promoting new hair growth.

A new extended-release oral minoxidil formulation claims to improve hair growth by maintaining steady blood levels, reducing side effects like hypotension, and potentially benefiting female hair loss. However, it is not considered groundbreaking as it builds on existing minoxidil treatments, and its effectiveness compared to current doses is debated.

Promising hair loss treatments in 2026 include GT20029, a topical androgen receptor degrader, and VDPHL01, an extended-release oral minoxidil, both offering safer alternatives with fewer side effects. Other treatments like sublingual minoxidil, OND-1, JW0061, TDM-105795, and AMP-303 are also being explored.

Minoxidil may inhibit androgen receptors and affect hormonal pathways, potentially explaining its effectiveness in treating androgenetic alopecia (AGA). Users discuss its varying effectiveness on scalp versus facial hair and note fewer side effects with topical use compared to oral.