Medications · FAQ
What side effects can minoxidil cause?
Short answer
Topical minoxidil can cause scalp itching, dryness, or irritation. Oral minoxidil can cause unwanted body hair, dizziness, swelling, or a fast heartbeat. Serious heart problems are possible with oral use. Seek urgent care for chest pain, trouble breathing, or fainting, and tell your physician about any new side effects.
Side effects depend on the form of minoxidil you use. Topical minoxidil can cause itching, redness, flaking, or burning on the scalp. Unwanted facial hair may occur if the medicine spreads beyond the treatment area. Avoid applying it to damaged or inflamed skin unless your physician specifically directs you to.
Oral minoxidil can cause unwanted facial or body hair, lightheadedness, a fast heartbeat, and fluid buildup. Fluid buildup may appear as swollen ankles or sudden weight gain. Oral minoxidil also carries a warning for serious heart problems, including fluid around the heart. Low-dose use still needs medical review.
Seek urgent care for chest pain, trouble breathing, fainting, or severe symptoms. Trouble breathing with swelling of the face, lips, or tongue may be an allergic reaction and needs emergency help.
Contact your physician promptly about new swelling, sudden weight gain, ongoing dizziness, or a racing heartbeat. Do not change your dose on your own. Your physician can decide whether you need an exam, monitoring, or a different treatment.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.