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What are the side effects of taking too much biotin?

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Quick Answer

Use of biotin in high doses has been shown to cause hives, difficulty breathing and swelling of the face, lips, tongue and throat. These effects are uncommon in normal doses, claims Drugs.com.

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Full Answer

Before taking biotin, consult a doctor as the supplement may interact with other drugs, recommends WebMD. Pregnant woman should also check before taking the supplement. Biotin can weaken the results of some cholesterol drugs. Additionally, other drugs can lower biotin levels. Biotin may be needed for patients receiving kidney dialysis.

Biotin, also known as vitamin H, is a coenzyme and B vitamin. It helps break down fats, carbohydrates and other substances in the body, says Drugs.com. It is used as a supplement for people with diabetes, brittle nails and other conditions. Biotin helps promote health of skin, nerves, the digestive tract, metabolism and cells, reports WebMD. It can also treat certain types of nerve pathology like peripheral neuropathy.

Biotin is known as a treatment for many different conditions, says WebMD. Along with a chromium supplement, biotin can improve blood sugar in diabetics. Biotin alone may also decrease insulin resistance, but more research is needed to test this theory. The majority of people do not need to take biotin supplements as deficiency is rare. Biotin is naturally found in many foods like whole-grain cereals, bread, eggs, other dairy products and nuts. The human body recycles biotin it has already used.

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