presentationa soft capsule. each capsule delivers: evening primrose oil 500mg providing gamma-linolenic acid (gla) 50mg vitamin e 10mg encapsulated with : capsule shell (modified starch glycerol gelling agent: carrageenan). disintegration time less than 30 minutes. suitable for vegetarians.usage & administration 1 to 4 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 evening primrose oil should only be given to epileptics (temporal lobe) under medical supervision. storage instructions to be stored in a cool dry place and protected from light. legal category food supplement.