NATROL MELATONIN DIETARY SUPPLEMENT HELPS YOUR BODY REGULATE ITS NATURAL SLEEP PATTERNS SO YOU CAN FALL ASLEEP MORE EASILY AND STAY ASLEEP. BECAUSE MELATONIN IS NATURALLY PRODUCED BY YOUR BODY, THIS SUPPLEMENT IS GENTLE AND NON-HABIT FORMING. EACH ONE-TABLET SERVING FROM THIS 120 COUNT BOTTLE PROVIDES 3 MG. OF MELATONIN WITH 10 MG. OF VITAMIN B6 AND 63 MG. OF CALCIUM FOR ADDITIONAL SUPPORT.