Ease the effects of stress with Natrol¨ Stress & Anxiety Day & Nite Formula - designed to calm you by day and night. Natrol®s DAY formula helps reduce anxiety and supports calm, focus, relaxation and a positive mood with 5-HTP and B vitamins.* Natrol's NITE formula features melatonin, l-glutamine, valerian, calcium and other night-time herbs to help you restore and recharge while you sleep.*