Can biotin cause an allergic reaction?

In rare cases, supplements of biotin (also known as vitamin B7 or vitamin H) may cause allergic reactions, such as hives, or an upset stomach. Talk to your doctor before taking biotin or any other dietary supplement.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.