Biotin, or vitamin H, is a water soluble vitamin. It is an essential coenzyme.
Biotin is synthesized by bacteria of the GI tract. Other sources include yeast, liver, egg yolks, kidneys, nuts and legumes. Both dietary sources result in urinary excretion being greater than oral intake.
Absorption takes place within the jejunum by secondary active transport along with sodium ions.
The coenzyme is involved with:
Deficiency of biotin is very rare and tends to occur under two circumstances:
Biotin deficiency may cause mental depression, muscular, pain, dermatitis, fatigue, glossitis, anorexia and nausea.
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