What it’s for
- Clinician-managed treatment of pattern hair loss
Minoxidil tablets, sometimes prescribed off label for hair loss.
Purpose, evidence and practical considerations.
Small trials show hair-growth effects. Oral treatment has not consistently outperformed topical minoxidil and exposes the whole body to effects on blood pressure and fluid balance.
Confidence: moderate
Oral minoxidil carries a boxed warning for pericardial effusion and can cause fluid retention, tachycardia, dizziness, edema and marked hypertrichosis. Hair-loss use is off-label and requires prescription oversight, blood-pressure and cardiovascular review, and special caution with heart or kidney disease. Compounding errors have caused severe overdoses.
Oral minoxidil is converted to an active sulfate that opens ATP-sensitive potassium channels and causes arteriolar vasodilation. Hair growth is an off-label effect, probably involving longer anagen growth and follicular signalling; the systemic cardiovascular pharmacology remains present at low doses.
Regulatory status: prescription medication (direct arteriolar vasodilator / potassium-channel opener), used off-label for hair loss
How people use it, with their schedules, context and original sources.
3.75 mg (Rx table) or 5 mg (hair section) · Daily
hair growth
Dose and schedule patterns reported in public protocols; these are observations, not prescribing advice. Private and hidden usage is excluded.
daily
These share a protocol with this intervention. This does not establish that they work together or are suitable alternatives.