biotin (oral)

biotin (oral)

Pronunciation: BYE oh tin

What is the most important information I should know about biotin?

Not all uses for biotin have been approved by the FDA. Biotin should not be used in place of medication prescribed for you by your doctor. Follow all directions on the product label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What is biotin?

Biotin is a form of vitamin B found in foods. Biotin helps the body break down fats, carbohydrates, and other substances.

Biotin is used to treat or prevent biotin deficiency. Biotin deficiency can be caused by malnutrition, rapid weight loss, long-term tube feeding, and other medical conditions.

Biotin has been used in alternative medicine as an aid to treat brittle nails or thinning hair.

Not all uses for biotin have been approved by the FDA. Biotin should not be used in place of medication prescribed for you by your doctor.

Biotin may also be used for purposes not listed in this product guide.

What should I discuss with my healthcare provider before taking biotin?

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You should not use this product if you are allergic to biotin.

Before using biotin, talk to your healthcare provider. Your dose needs may be different:

  • if you have kidney disease;
  • if you have had stomach surgery; or
  • if you smoke.

Your dose needs may be different during pregnancy or while you are nursing. Do not use this product without medical advice if you are pregnant or breast-feeding a baby.

Do not give any herbal/health supplement to a child without medical advice.

How should I take biotin?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

It may take 3 to 6 months before the condition of your hair or nails improves when using this medication as directed.

After you stop using this medication, your nails will likely return to their original condition within 6 to 9 months.

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Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra biotin to make up the missed dose.

What happens if I overdose?

Since biotin is a water-soluble vitamin, an overdose is unlikely to occur.

What should I avoid while taking biotin?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

What are the possible side effects of biotin?

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Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Common side effects may include:

  • upset stomach; or
  • mild skin rash.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect biotin?

Taking certain medications can lower your blood levels of biotin, which could affect your biotin dose needs. Ask a doctor or pharmacist before taking biotin if you are also using any of the following drugs:

  • carbamazepine;
  • phenobarbital;
  • phenytoin; or
  • primidone.

This list is not complete. Other drugs may interact with biotin, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.

Where can I get more information?

Consult with a licensed healthcare professional before using any herbal/health supplement. Whether you are treated by a medical doctor or a practitioner trained in the use of natural medicines/supplements, make sure all your healthcare providers know about all of your medical conditions and treatments.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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