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Biotin

Recommended Daily Allowance

America	Australia	UK
None known	None Known	None Known

Uses and Facts

Biotin functions as an essential cofactor for four enzymes. They are involved in
the following functions.

Biotin is essential for carbohydrate metabolism and in the synthesis of fatty acids.
It also helps incorporate amino acids into protein.

Healthy hair and nails require biotin.

Biotin is absorbed in the small intestine and any excess is excreted in the urine. Normally, the amount of biotin excreted in the urine and feces is up to six times greater than the amount eaten in food due to the large quantities produced by gut bacteria.

Biotin supplements may help to improve blood glucose control in diabetics by enhancing insulin sensitivity and increasing the activity of enzymes involved in glucose metabolism. Biotin in high doses may also be useful in the treatment of diabetic neuropathy.

Biotin can be used to treat frail, splitting or thin fingernails and to improve hair condition in cases where there is a deficiency. Biotin may improve hair health through its action on the metabolism of scalp oils.

Sources

Liver, kidney, brewer’s yeast, egg yolks, whole grains, breads, fish, nuts, beans, meat and dairy products are all good sources of biotin. Food processing techniques can destroy biotin.

Supplements

Biotin is available commercially as isolated biotin or a complex in brewer’s yeast.

Interactions

Raw egg white contains a protein called avidin that prevents biotin absorption.

Sulfa drugs, estrogen, and alcohol may raise biotin requirements.

Biotin works closely with folic acid, pantothenic acid and vitamin B12. It can lessen the symptoms of pantothenic acid and zinc deficiencies.

Long term use of antibiotics can affect the balance of the digestive system and reduce or stop the manufacture of biotin by bacteria.

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