Medically reviewed on November 28, 2017
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 has been used in alternative medicine as a likely effective aid in treating or preventing biotin deficiency. Biotin deficiency can be caused by malnutrition, rapid weight loss, long-term tube feeding, and other medical conditions.
Biotin has also been used to treat seborrhea (skin rash) in babies. However, research has shown that biotin may not be effective in treating this condition.
Other uses not proven with research have included treating brittle nails or thinning hair, diabetes, nerve pain, and other conditions.
It is not certain whether biotin is effective in treating any medical condition. Medicinal use of this product has not been approved by the FDA. Biotin should not be used in place of medication prescribed for you by your doctor.
Biotin is often sold as an herbal supplement. There are no regulated manufacturing standards in place for many herbal compounds and some marketed supplements have been found to be contaminated with toxic metals or other drugs. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination.
Biotin may also be used for purposes not listed in this product guide.
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.
Before taking this medicine
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?
When considering the use of herbal supplements, seek the advice of your doctor. You may also consider consulting a practitioner who is trained in the use of herbal/health supplements.
If you choose to use biotin, use it as directed on the package or as directed by your doctor, pharmacist, or other healthcare provider. Do not use more of this product than is recommended on the label.
It may take 3 to 6 months before the condition of your hair or nails improves.
Call your doctor if the condition you are treating with biotin does not improve, or if it gets worse while using this product.
Biotin can cause false results with certain medical tests. Tell any doctor who treats you that you are using biotin.
After you stop using this medication, your nails will likely return to their original condition within 6 to 9 months.
Store at room temperature away from moisture and heat.
What happens if I miss a dose?
Skip the missed dose if it is almost time for your next scheduled dose. Do not use 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 healthcare provider's instructions about any restrictions on food, beverages, or activity.
Biotin side effects
Get emergency medical help if you have 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.
See also: Side effects (in more detail)
What other drugs will affect biotin?
Taking certain medicines 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:
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 product guide.
- 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.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2018 Cerner Multum, Inc. Version: 3.01.
More about biotin
- Biotin Side Effects
- Support Group
- En Español
- 15 Reviews – Add your own review/rating
- Drug class: vitamins
- Biotin Capsules and Tablets
- Biotin Fast-Dissolve Tablets
- Biotin Sublingual Tablets
- Biotin Chewables
- Biotin (Advanced Reading)