Helps support relaxation?? restful sleep?? and feeling better</br>Plays a part in the synthesis of both melatonin and serotonin?? hormones involved with mood and stress response</br>Also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity</br>If needed?? l-tryptophan converts to niacin in the body</br>Extremely pure and is regularly tested to ensure the highest standards of quality</br></br>Product Description</br></br>Dietary supplement. Mood?? relaxation?? sleep. The essential amino acid L-tryptophan helps support relaxation?? restful sleep?? and feeling better. It plays a par