uality with biotin supplementation, for most healthy individuals, the evidence for accelerated growth is not strong. Biotin's primary role is in cell growth and metabolism, which is fundamental to healthy hair and nail formation, but direct acceleration beyond normal rates is not consistently observed in non-deficient populations.

n biotin really make my hair and nails grow faster? While some individuals, especially those with certain deficiencies or conditions like brittle nail syndrome, may experience improvements in hair and nail quality with biotin supplementation, for most healthy individuals, the evidence for accelerated growth is not strong. Biotin's primary role is in cell growth and metabolism, which is fundamental to healthy hair and nail formation, but direct acceleration beyond normal rates is not consistently observed in non-deficient populations.

uirements, making overt deficiency rare. Concerns about dietary intake should be discussed with a healthcare professional or registered dietitian (NIH ODS).

n I get enough biotin from my diet? Yes, biotin is found in a variety of common foods, including egg yolks, nuts, seeds, sweet potatoes, liver, and some vegetables. The gut microbiota also synthesizes some biotin. For most healthy adults, a balanced diet typically provides sufficient biotin to meet daily requirements, making overt deficiency rare. Concerns about dietary intake should be discussed with a healthcare professional or registered dietitian (NIH ODS).

vitamin

Vitamin B7 (Biotin)

Also known as: Biotin, B7

Half-life

2 h

Typical timing

morning

Food rule

either

Default unit

mcg

Overview

Vitamin B7, commonly known as biotin, is a water-soluble vitamin that is part of the B-complex group. It plays a crucial role in various metabolic processes in the human body, primarily as a coenzyme for carboxylase enzymes. These enzymes are involved in the metabolism of carbohydrates, fats, and proteins. Biotin is essential for gluconeogenesis (the synthesis of glucose from non-carbohydrate sources), fatty acid synthesis, and the breakdown of certain amino acids. Because it is water-soluble, biotin is not stored in the body to a significant extent, and regular dietary intake is necessary. It can be obtained from a variety of foods, including egg yolks, nuts, seeds, sweet potatoes, and organ meats. The gut microbiota can also synthesize some biotin, though the extent of its absorption and contribution to human nutrition is still an area of research (NIH ODS).

Deep dive

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Known interactions

Category rule: vitamin × medication
Note
Certain vitamins interact with specific medications (e.g., vitamin K with blood thinners).
Specific pairs are checked against a licensed source; confirm with your provider.

Frequently asked

Sources referenced

* NIH Office of Dietary Supplements (ODS) * MedlinePlus * PubChem * Mayo Clinic * U.S. Food and Drug Administration (FDA) drug labels/guidance * Cochrane Library reviews * Examine.com * DrugBank

Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.

Related compounds

Others in the vitamin category or studied for the same goals.

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Overview

Deep dive

How it works

Studied benefits

State of the evidence

Side effects

Warnings & who should avoid it

Contraindications

Do not mix with

Timing, food & half-life