Serious Complication of Low-Dose Oral Minoxidil for Hair Loss

    October 2022 in “ JAAD case reports ”
    R.M. Trüeb, N. Caballero-Uribe, N.C. Luu, A. Dmitriev
    TLDR Low-dose oral minoxidil can cause serious heart complications.
    A serious complication of low-dose oral minoxidil for treating female androgenetic alopecia has been reported, specifically pericardial effusion. Although adverse effects are generally considered infrequent and minor, a case involving a young, healthy female patient developed pericardial effusion within weeks of starting a 1.25 mg dosage. Symptoms included shortness of breath, chest pain, and leg swelling. This suggests that pericardial effusion may be an inherent risk of minoxidil's mode of action, particularly as a potassium-channel opener. Physicians should prescribe and monitor this treatment cautiously, and unsupervised consumer use is discouraged for safety reasons.
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