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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 high-potency vitamin supplements are available on iHerb.com, SuperSup.com and ProfessionalSupplementCenter.com. Biotin is commonly referred to as vitamin B-7 and is water-soluble; therefore, it must be replenished on a daily basis, according to Dr. Weil.


Biotin is a B-vitamin and coenzyme that plays several roles in the human body and affects the skin and nerves. It supports digestive health and plays a role in cellular metabolism. According to WebMD, a normal diet along with the body's recycling of previously used biotin satisfies the body's requir


Biotin is a B vitamin that helps keep the skin, nerves, cells, digestive tract and metabolism healthy, according to WebMD. This vitamin, also sometimes referred to as vitamin H, occurs naturally in many foods, including whole-wheat grains, eggs, dairy products, salmon and chicken.


Biotin is considered fairly safe even at high levels, says WebMD. In fact, researchers have not discovered a dosage level that might create a health risk.


To take biotin, consult a doctor or a trained health supplement specialist if you intend to take the vitamin in the form of herbal supplements, and take the appropriate dosage according to the package instructions or as recommended by a health care professional, advises Drugs.com. Avoid taking addit


Biotin does not have any known side effects, according to WebMD. Researchers have not determined a maximum safe dose of biotin due to the lack of adverse side effects.


While there is no recommended dietary allowance for biotin, an adequate dosage for adults 18 years of age and older is 30 micrograms daily. The appropriate dose is ultimately subject to the age, health and needs of the patient.


The recommended daily dosage of biotin is 30 to 100 micrograms for adults and adolescents, states Mayo Clinic. For children, dosage depends upon age. Children who are 7-10 years old take 30 micrograms, 4-6 year olds take 25 micrograms, and newborn up to age 3 take 10 to 20 micrograms.


The length of time for the effects of biotin intake to manifest vary and are dependent on factors such as the physiology of an individual, dosage and purpose, according to WebMD. Biotin is an enzyme and a type of B vitamin necessary for healthy skin and metabolism.