Minoxidil – common side effects

Minoxidil is commonly used in gender-affirming care for individuals undergoing hormone replacement therapy (HRT) to promote hair growth, particularly in transgender men or non-binary individuals seeking masculinization. However, like any medication, minoxidil can have potential unwanted or adverse effects. Here are some of the possible side effects:

Side EffectDescription
Scalp IrritationMinoxidil may cause scalp irritation in some individuals, leading to redness, itching, or burning sensation at the application site.
Unwanted Hair GrowthSome users may experience unwanted hair growth in areas where minoxidil is applied, such as the face or neck. This can occur particularly in women or individuals using higher concentrations of minoxidil.
Increased Hair SheddingIn the initial stages of minoxidil use, some individuals may experience increased hair shedding before new hair growth begins. This shedding is temporary and typically resolves within a few weeks.
Dryness or FlakingMinoxidil may cause dryness or flaking of the scalp in some users.
DizzinessRarely, minoxidil may cause dizziness or lightheadedness in some individuals, especially if it is accidentally ingested or if too much is applied to the scalp.
Allergic ReactionsAlthough rare, allergic reactions to minoxidil can occur, presenting with symptoms such as rash, itching, swelling, or difficulty breathing. Immediate medical attention is necessary if any signs of an allergic reaction occur.

https://www.philipkingsley.co.uk/pklabs-patient-information-topical-minoxidil

https://docetp.mpa.se/LMF/Rogaine%20cutaneous%20foam%20ENG%20PL_09001bee807a80a1.pdf

https://labeling.pfizer.com/ShowLabeling.aspx?id=2199&Section=PPI

Updated on February 16, 2024

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