Tryfonia is L-5-hydroxytryptophan (5-HTP) derived from Griffonia simplicifolia seed extract. 5-HTP is a metabolite of the amino acid tryptophan, and an essential precursor of the biosynthesis of the neurotransmitter serotonin and the neurohormone melatonin. Research supports a role for 5-HTP in supporting mood balance, ease of sleep, and the proper tone of the muscles on the back of the neck, and resulting changes in blood flow and pain fibers.