Life Extension Optimized Tryptophan Plus 90 Vegetarian Capsules

Optimized Tryptophan Plus is made with high-quality L-tryptophan, as well as nutrients such as lysine, niacinamide and more to help maintain healthy tryptophan activity in the body. Serotonin is a neurotransmitter in the brain associated with positive mood and restful sleep. Your body requires the essential amino acid tryptophan to produce and maintain healthy serotonin levels. But your body cannot make tryptophan on its own.