L-tryptophan is an essential amino acid and a precursor for the synthesis of both melatonin and serotonin, a hormone and a neurotransmitter involved with mood and stress response as well as sleep/wake cycles. If needed L-tryptophan converts to niacin in the body, an important B vitamin. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.
Directions1 capsule three times daily, between meals and preferable with fruit juice. To support restful sleep, take 3 capsules before bed.
Ingredients3 capsules contain: L-Tryptophan 1.5G
Other ingredients: gelatin (capsule), dibasic calcium phosphate, microcrystalline cellulose, silica, and magnesium stearate.