L-Tryptophan, 500mg - 60 caps is a capsule product from Swanson, containing L-Tryptophan at 500 mg per capsule. Each pack provides 60 capsules. Ingredients: L-Tryptophan 500 mg Gelatin Rice flour Magnesium stearate Ingredients L-Tryptophan 500 mg. Other ingredients: Gelatin, rice flour, magnesium stearate. Allergens No allergen information explicitly declared on the official product page. Product is certified Gluten Free (tested to less than 20 ppm) and Non-GMO. Directions As a dietary supplement, take one capsule with water 30–60 minutes before sleeping. Warnings For adults only. Do not take this product if you are pregnant or nursing or taking prescription antidepressants. Consult your physician before using this or any product if you are taking medication or have a medical condition. Keep out of reach of children. Do not use if seal is broken. Storage Store in a cool, dry place. Country of origin United States