pure grade ,stronger than multivitamin levels ,skin and hair support ,small, easy to swallow capsules once known as vitamin h but commonly referred to as biotin or vitamin b7, is an essential water soluble nutrient. biotin is an interesting member of the b vitamin family because whilst our body can\'t produce it (which is part of the definition of being a vitamin), the bacteria in our digestive system can make it, and we absorb it from this source. however, antibiotics and intestinal disturbances can disrupt its normal production.biotin contributes to the process that releases energy from food, it also contributes to the normal function of the immune system and mucous membranes. it is found in small amounts in food sources such as eggs, salmon and leafy green vegetables. the body also uses biotin to produce amino acids, which are then converted in to keratin, a protein which makes up the structural component of nails, hair and skin. therefore, biotin a vital nutrient for the maintenance of normal hair and skin. inadequate levels of biotin affects energy levels, complexion and the ability to process information, as it is an integral vitamin for normal psychological function.this is a high strength supplement, and as such it really doesn\'t need to be taken for much longer than a few months after which one of our multivitamins, or a b complex will provide adequate levels.,normal energy yielding metabolism ,normal macronutrient metabolism ,normal functioning of the immune system ,maintenance of normal mucus membranes ,normal functioning of the nervous system ,normal psychological function ,maintenance of normal hair and skin competitors may offer stronger products but our nutrition experts say they\'re over the recommended levels and not necessary. suitable for vegetarians and vegans.