The ingredients of Scitec Nutrition Tryptophan:
L-Tryptophan granular 76%, capsule shell [gelatin, glazing agent (shellac), color (iron oxides and hydroxides), acidity regulators (ammonium hydroxide, potassium hydroxide)].
Made in a facility that produces milk, eggs, gluten, soy, peanuts, tree nuts, celery, fish, crustaceans, molluscs and sulfur dioxide containing foods.