The high levels of tryptophan in bananas, which is the the precursor to «feel - good» hormone serotonin, will keep you smiling. (livwellnutrition.com)
Indoleamine 2,3 - dioxygenase (IDO1) is an enzyme that catalyze the transformation of the amino acid tryptophan in kynurenine. (iteostherapeutics.com)
In 1990, the Food and Drug Administration ordered a recall of all supplements containing tryptophan after a link was found to an outbreak of a potentially fatal disorder known as eosinophilic myalgia syndrome (EMS), which affects the skin, blood, muscles and organs. (herbalfenphenlawyers.com)