Mood & stress. Day: Promote calm & relaxation. Helps reduce occasional anxiety. 100% drug-free. Night: Fall asleep faster. Stay asleep longer. 100% drug-free. Day: Natrol Stress & Anxiety consists of two separate blends to meet your daytime vs. nighttime needs. The daytime formula promotes calm and relaxation during the day: 5-HTP supports serotonin which helps enhance mood. Vitamins B-6, B-12 and folic acid help maintain emotional well-being. L-theanine ensures relaxation without making you drowsy. Day: Tablets are sealed in blisters. Night: Natrol Stress & Anxiety consists of two separate blends to meet your daytime vs. nighttime needs. The nighttime formula contains ingredients to promote restorative sleep, helping you to wake up refreshed and ready to tackle the day. Melatonin helps you fall asleep faster and stay asleep longer. Antioxidants protect your body from oxidative damage, helping you cope with stress. Melatonin is a nighttime sleep aid for occasional sleeplessness.