Low-dose oral minoxidil is already used off-label in children, with no shared guidance on who, how much or how to monitor. This modified Delphi exercise invited 51 clinicians from nine countries who had each treated more than ten children with it; 49 completed three rounds, and 84 of 127 statements reached the 70% agreement threshold.
The panel supported its use from age 4 to under 12 for hair follicle miniaturisation, hair-cycle disorders and hair-shaft disorders, and as an adjunct in some scarring alopecias. Two dosing approaches met consensus: fixed weight bands matched to tablet sizes (0.25–0.625 mg under 20 kg, 1.25 mg at 20–40 kg, 1.875 mg over 40 kg) or a start of 0.01–0.02 mg/kg/day. Increases of 50–100% and review every 3–6 months were agreed. Pericardial effusion or tamponade and phaeochromocytoma were contraindications. Routine baseline tests and blood pressure monitoring were not felt to be necessary for every low-risk child.
This gives a shared starting point for a treatment many families prefer to topical minoxidil. It is expert opinion from enthusiastic prescribers, not trial evidence, and it remains off-label. Tablet strengths in India may not match the fixed bands, so weight-based dosing may be more practical here.
- Consider low-dose oral minoxidil for children aged 4 to 11 with non-scarring hair loss where topical treatment fails or is impractical.
- Start with the weight-band dose or 0.01–0.02 mg/kg/day, and review every 3 to 6 months.
- Do not prescribe where there is pericardial effusion or phaeochromocytoma.
- Record that use is off-label and explain this to parents.
- Use weight-based dosing where local tablet strengths do not match the fixed bands.
Why it matters
It turns ad hoc paediatric prescribing into a common, checkable standard.
Don't overread it
This is Delphi expert consensus from experienced prescribers, not trial evidence of safety or efficacy in children.
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