presentationa yellow powder in a clear hard shell capsule.each capsule delivers: riboflavin (vitamin b2) 50mg encapsulated with: cellulose capsule shell (hydroxypropyl methylcellulose) silicon dioxide magnesium stearate. disintegration time less than 30 minutes. suitable for vegetarians.usage & administration1 to 2 capsules daily. other information allergen advice see presentation section for ingredients listed in bold. the following list of allergens are excluded: wheat barley soya eggs milk (and milk products) lactose nuts sulphites celery fish shellfish yeast and gluten containing ingredients.cautions taking this product may occasionally result in a darker yellow colouration of the urine which is harmless. this product is not recommended for pregnant or lactating women. storage instructions to be stored in a cool dry place and protected from light.legal category food supplement.