What is the daily dose of biotin?

The adequate intake of biotin depends on the age of the person taking the supplement and varies from 5 to 35 micrograms per day, reports WebMD. However, the need to supplement this nutrient is uncommon because it is rare to have biotin deficiency, says Mayo Clinic.

Biotin, also known as vitamin H, is important in maintaining health in the digestive tract, skin, nerves, cells and metabolism, according to WebMD. Recommended daily intake is 10 to 20 micrograms from infancy to three years of age, 25 micrograms for children aged four to six, 30 micrograms for ages seven to 10, and between 30 and 100 micrograms for adolescents and adults, reports Mayo Clinic.