Don't Let a Busy Life Affect Your Health Better mood, increased sleep quality and stronger immune system may be helped with L-Tryptophan. It functions as a precursor to serotonin, a neurotransmitter. L-Tryptophan can be obtained through diet or supplementation, but it cannot be produced by the body. * We Are Stressed: More than 79% of Americans feel stress sometime during their day. The added support of L-Tryptophan supports normal serotonin production with helps you to handle occasional stress. * Why We Are Stressed: Money, work, personal health, family responsibilities and many more things that can cause stress in your daily life. * Benefits of Managing Stress: Regular stress management can lead to better overall health, improved mood and immune function, as well as a higher sense of well being, to name a few. L-Tryptophan can be a tool to help with stress management. *Packaging received may be different than what is shown as we transition to a new look, but rest assured all formulations and products remain the same.