L-Tryptophan 1,000 mg with Bioperine® and B vitamins L-Tryptophan is an essential amino acid and a precursor for the synthesis of serotonin. Tryptophan crosses the blood-brain barrier and is converted to L-5-Hydroxytryptophan (5-HTP), which in turn is converted into serotonin. Serotonin is an important neurotransmitter necessary for the regulation of appetite, mood, and melatonin production.*

Warning: If you are taking medications for neurological conditions including Selective Serotonin Reuptake Inhibitors (SSRIs) or Monoamine Oxidase Inhibitors (MAOI), or are pregnant or nursing, do not use this product This product contains NO yeast, wheat, gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives, or flavoring Keep out of reach of children For optimal storage conditions, store in a cool, dry place (59°-77°F/15°-25°C) (35-65% relative humidity) Tamper resistant package, do not use if outer seal is missing