L-Tryptophan 1000mg from AMIX NUTRITION is a supplement based on L-Tryptophan . L-Tryptophan 1000mg is an essential amino acid, this means that the body cannot create it and it is essential to consume it. L-Tryptophan 1000mg is a natural serotonin precursor. Main benefits of L-Tryptophan 1000mg: Serotonin precursor. Improve recovery. Format: Bottle of 90 capsules How to use: As a dietary supplement, take 1-2 capsules daily. Preferably before going to bed. Dietary supplement. Nutritional Information: