Nutrient

Biotin

Established research area

A water-soluble B vitamin (B7) involved in the metabolism of fats, carbohydrates, and protein. Found in eggs, nuts, seeds, and salmon.

Commonly noted

Commonly noted: Biotin (vitamin B7) is a water-soluble vitamin the body uses in the metabolism of fats, carbohydrates, and protein; eggs, nuts, seeds, salmon, and sweet potato are common sources.
Low intake: A biotin shortfall is uncommon and is commonly discussed in relation to thinning hair and a scaly skin rash.
Higher intake: Biotin from food and supplements has not been shown to cause harm, and no upper intake level has been set; note that high biotin intake can interfere with the accuracy of some laboratory blood tests.

Source: NIH ODS

Reference intakes

General reference figures for a typical adult — not a personal target or a claim of need.