Contains magnesium oxide monohydrate, which is derived from the Dead Sea. Combined with vitamins B6 and E, which increase magnesium absorption, this specific formula was developed to combat the onset of cramps and help relieve the discomfort associated with their occurrence. Dosage 1-2 capsules daily, before bedtime Nutritional Value & Ingredients 1 capsule provides on average: Magnesium Oxide Monohydrate 450 mg -* provides elemental magnesium 190 mg 50.7* Vitamin E 30 mg 250* Vitamin B6 10 mg 714.3* * % Recommended Daily Intake