Longevity Science Magna-Calm has been discontinued by the manufacturer. Magna-Calm is an excellent source of highly absorbable magnesium, from the most bioavailable source - magnesium citrate. The powder has a pleasant, unsweetened natural lemon flavor and a mild effervescence. All ingredients are derived from natural sources. Directions: Take ½ to 1 scoop daily, preferably in the evening. If loose bowels or diarrhea occurs, simply reduce dose until bowel movements are normal. Place the required amount in hot water; let dissolve; add some cold water, and then drink.Daily dose: 1-2 scoops as needed. For improved sleep, take 1/2 to 1 hour before bedtime, or anytime to support aching muscles. Active Ingredients Amount Per Serving Magnesium ** Magnesium (citrate) 365mg Other Ingredients:Citric acid, Potassium Bicarbonate, Natural Lemon Flavor