Biotin supports the maintenance of normal skin, hair & mucus membranes Each 300ug Biotin tablet provides 600% of the Nutrient Reference Value (NRV) Suitable for vegetarians & vegans Biotin also contributes to normal psychological function Holland & Barrett Biotin supports the maintenance of normal skin, hair and mucus membrances. Natural food sources of biotin include pulses, nuts and fish. Biotin contributes to: Normal energy yielding metabolism Normal functioning of the nervous system Normal macronutrient metabolism Normal psychological function The maintenance of normal hair and skin The maintenance of normal mucus membranes