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Biotin (vitamin B7, dietary supplement)

    Biotin is a type of B-vitamin, also known as vitamin B7 or vitamin H. It plays a role in metabolizing carbohydrates, fats, and proteins into energy. It is also a popular supplement to improve hair and nail health. Aside from supplements, biotin is naturally occurring in food such as meat, eggs, nuts, and leafy green vegetables.


    What is biotin used for?

    Biotin deficiency is uncommon, however, biotin supplements may be useful in individuals who have poor hair growth or brittle nails. People who are on special or restrictive diets may be at greater risk of general vitamin deficiency.

    How should I take biotin?

    Read the directions on the packaging for complete information. Check the label and expiration date.

    For oral dosage forms, swallow it whole without chewing, crushing, or dissolving it in liquid.

    How do I store biotin?

    Store this product at room temperature away from direct light and moisture. To prevent drug damage, you should not store it in the bathroom or the freezer.

    There may be different brands of this drug that may have different storage needs. So, it is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

    You should not flush this product down the toilet or pour them into a drain unless instructed to do so. Additionally, it is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

    Precautions & Warnings

    What should I know before using biotin?

    Before using this drug, tell your doctor if you are/have:

    • Pregnant or breastfeeding.
    • Taking any other medicines. This includes any prescription, OTC, and herbal remedies.
    • An allergy to any of the ingredients of this product.
    • Any other illnesses, disorders, or medical conditions.

    Is it safe during pregnancy or breastfeeding?

    Unfortunately, there isn’t enough information about the safety of using this drug during pregnancy and breastfeeding. However, it is likely safe to take. Pregnant women may need more nutritional supplements. Please always consult with your doctor to weigh the potential benefits and risks before taking any medication.

    Side Effects

    What side effects can occur from biotin?

    There are no adverse reactions that have been reported while using biotin supplements.


    What drugs may interact with biotin?

    This medication may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects.

    To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist.

    Does food or alcohol interact with biotin?

    This drug may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Avoid consuming alcohol while taking this drug. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

    What health conditions may interact with biotin?

    This drug may interact with underlying conditions. This interaction may worsen your health condition or alter the way the drug works. Therefore, it is important to always let your doctor and pharmacist know all the health conditions you currently have.


    The information provided is not a substitute for any medical advice. Therefore, you should always consult with your doctor or pharmacist before using any medication.

    What is the dose for an adult?

    Take 1 tablet or capsule a day, or as directed by the manufacturer or your physician.

    Currently, there is no established recommended nutrient intake (RNI) for biotin.

    Adequate intake of biotin for adults (per day):

    • 30 mcg
    • While lactating: 35 mcg

    What is the dose for a child?

    Take 1 tablet or capsule a day, or as directed by the manufacturer or your physician.

    Currently, there is no established recommended nutrient intake (RNI) for biotin.

    Adequate intake of biotin for children (per day):

    • Less than 12 months: 0.7 mcg per kg of body weight
    • 1 to 3 years: 8 mcg
    • 4 to 8 years: 12 mcg
    • 9 to 13 years: 20 mcg
    • 14 to 18 years: 25 mcg

    How is biotin available?

    Biotin is available in the following dosage forms and strengths:

    • Capsule 5 mg, 10 mg
    • Tablet 1 mg, 5 mg, 10 mg

    What should I do in case of an emergency or overdose?

    There are no reports of overdose with high doses of biotin. If you experience any severe side effects, seek medical attention right away.

    What should I do if I miss a dose?

    If you miss a dose, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled.


    BMI Calculator

    Use this calculator to check your body mass index (BMI) and find out if you're at a healthy weight. You can also use this tool to check your child's BMI.



    Hello Health Group does not provide medical advice, diagnosis or treatment.


    Biotin (Oral Route) https://www.mayoclinic.org/drugs-supplements/biotin-oral-route/description/drg-20062359 Accessed July 25, 2021

    Biotin https://ods.od.nih.gov/factsheets/Biotin-Consumer/ Accessed July 25, 2021

    A Review of the Use of Biotin for Hair Loss https://pubmed.ncbi.nlm.nih.gov/28879195/ Accessed July 25, 2021

    Biotin Function https://www.chem.uwec.edu/webpapers2001/barkacs/pages/function.html Accessed July 25, 2021

    Philippine Dietary Reference Intakes 2015: Summary Tables https://www.fnri.dost.gov.ph/images/images/news/PDRI-2018.pdf Accessed July 25, 2021

    Biotin. Lexi-Drugs. Lexicomp. Wolters Kluwer Health, Inc. Riverwoods, IL. Accessed July 25, 2021. http://online.lexi.com

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    Written by Stephanie Nera, RPh, PharmD Updated Jul 26, 2021
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