Swanson L-Tryptophan 500 mg 60 Caps 4 Pack

Helps support healthy serotonin levels, restful sleep and regulates body's circadian rhythm Helps combat jet lag Important amino acid that must be obtained from diet or supplements Non-GMO Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months.