Jarro Sil Activated Silicon improves the strength & elasticity of collagen by stimulating collagen production. Stronger collagen
...L-Tryptophan is an essential amino acid & hence cannot be synthesized by the body, but must be obtained from food or supplements. Because L-tryptophan is converted to serotonin (5-hydroxytryptamine) & melatonin in the body, it plays an important role in promoting relaxation, restful sleep & positive mood.