Vitamin H is produced in small quantities by the human gut microbiota. Foods rich in vitamin H (biotin) include yeast, kidneys, egg yolks, peas, oats, milk, chocolate, mushrooms, and beef. Recommended daily intake of vitamin H: for adults – 30–100 mg;
for babies – 7 mg;
for children – 8–20 mg;
for teenagers – 25 mg.