Minoxidil Side Effects

Possible side effects of topical minoxidil are listed below. Tell your doctor if these side effects are severe or continue after a few days.

Scalp dryness, itching, flaking, scaling, burning, or irritation

More serious side effects of topical minoxidil are listed below. Call your doctor immediately or seek emergency medical attention if you develop the following serious symptoms:

• An unusual or allergic reaction
• Lightheadedness
• Swelling of the face, hands, feet, or abdomen
• Weight gain
• Difficulty breathing
• Chest pain
• Fast heartbeat

The above list may not include all the potential adverse effects of minoxidil. Contact your healthcare professional if your side effects are unusual or severe or if they do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Minoxidil Overdose: In case of an overdose of minoxidil, call your doctor immediately. You can also call the local poison control center or national poison control center at 1-800-222-1222. Call 911 if a person cannot be awakened, has trouble breathing, has collapsed, or has had a seizure.

Source: FDA