Natrol Melatonin 5 mg is a fast dissolving sleeping aid that relieve occasional sleeplessness. Its main active ingredients include Melatonin, Biotin, and magnesium that restores regular sleeping patterns to promote more relaxing and restful sleep. It also helps reduce anxiety. This tasty, strawberry flavored sleeping aid dissolves quickly in the mouth before swallowing, and therefore requires no water. They should be taken once daily just 20 minutes before sleeping and are 100% vegetarian, as well as lactose and gluten free.