Are there side effects?

Written by Dr. Christian Drerup

Updated on 28 April 2026

Yes. As with any medication, side effects can occur; they vary depending on the active ingredient and the form of administration. Here are the most important ones in detail.

With topically applied minoxidil, scalp irritation is the most common, such as itching, redness, or dry skin. Less commonly, unwanted hair growth on other parts of the body, headaches, dizziness, or a racing heartbeat can occur. Taking it orally can have a stronger effect on the whole body, for example on blood pressure and circulation.

With finasteride, sexual dysfunction is possible, such as reduced libido or problems with erection and ejaculation. Some users report mood swings or depressive moods. Very rarely, allergic reactions or fluid retention can occur.

Before every prescription, a doctor checks your information for contraindications, and the treatment is medically supervised. If you experience any symptoms, report them early so the treatment can be adjusted.

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