We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Vitamin B8?

By Shelby Miller
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Vitamin B8, also known as biotin, is a B-complex compound that is available in many foods, such as dairy products, oatmeal, and peanut butter, and is produced in the human body via bacteria in the intestines. Technically, it is not a true vitamin — it is a coenzyme that acts in conjunction with B vitamins to facilitate a number of bodily functions, such as metabolism of nutrients. Like vitamins B and C, vitamin B8 is water-soluble, meaning that it cannot be stored in the body and the excess is eliminated through the urinary system. It is widely used in beauty products, as it is known to strengthen hair, skin, and nails. One of its major benefits is helping to maintain the immune and nervous systems, as well.

As a process, vitamin B8 is involved in the metabolism of all three of the macronutrients obtained from food: carbohydrates, fats, and protein. It helps break down carbohydrates into simple sugars and may aid in stabilizing blood sugar. Similarly, it breaks down fats into chains of fatty acids; as such, it has been reported to have weight-loss benefits. It also plays a role in metabolizing amino acids, such as leucine, into usable proteins.

Another notable function of biotin is that it is essential to nail and hair health. Not only does it aid in nail and hair growth, but it prevents premature graying as well as prevents hair loss. In fact, vitamin B8 supplements are recommended for the treatment of both graying hair and splitting nails.

Vitamin B8 is also linked to the maintenance of a healthy immune system and nervous system. Though biotin deficiency is rare, those who present with this condition demonstrate impaired immune function, such as increased vulnerability to bacterial infections, as well as neurological symptoms, such as depression, hallucinations, and tingling in the hands and feet. These and other symptoms of deficiency, such as hair loss and metabolic problems, can often be treated with biotin supplementation.

The Recommended Dietary Allowance (RDA) for vitamin B8 is 30 micrograms (mcg) for an adult and is 35 mcg for women who are pregnant or nursing. Available in supplement form, it can also be taken in the form of brewer’s yeast, which supplies the entire B-vitamin complex. Foods rich in vitamin B8 include dairy products, liver, rice, wheat germ, bran, oatmeal, peanut butter, and egg yolks. It should be noted, however, that a diet rich in raw egg whites — namely consumption of 20 or more a day — can cause vitamin B8 deficiency, as the protein avidin in egg whites binds to it and renders it inactive.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By anon1004478 — On Feb 21, 2021

Vitamin B8 is inositol... Not really a vitamin anyway. Biotin, as you know, is vitamin B7. Please correct your site

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.