5HTP is a natural amino acid found in the body. Serotone also contains specific co-factor B vitamins and zinc. Not advisable if pregnant or taking fenfluramine. Care should also be taken if being prescribed SSRIs. Contains B Vitamins and Zinc Best taken in the evening with a carbohydrate snack Does not contain Valerian. One 50mg 5HTP capsule typically provides50mg 5HTP, 5mg Vitamin B6, 2.5mg Zinc, 25µg Biotin, 50µg Folic acid, 15mg Niacin. Encapsulated with these natural ingredients:Rice bran, hydroxypropyl methylcellulose (carrageenan, pectin), silicon dioxide, vegetable magnesium stearate. Suggested intake50mg capsule: Take 1-2 capsules at the end of the day with a carbohydrate snack. Please noteNot advisable if pregnant or taking fenfluramine. Care should also be taken if being prescribed SSRIs.Does not contain Valerian. Can cause drowsiness; do not drive or operate machinery if affected. In a very few cases gastro-intestinal discomfort can occur, which usually disappears by reducing intake. Contains carrageenan.