Description: Effer-C 240 gms Each Teaspoon Contains Approximately: Vitamin C (from Mineral Ascorbates) 2,350 mg. Calcium (Calcium Ascorbate Complex) 450 mg. Magnesium (Magnesium Ascorbate Complex) 250 mg. Potassium (Potassium Ascorbate Complex) 99 mg. Makes an effervescent drink when mixed in liquid Other ingredients: Potassium bicarbonate, citric acid and rose hips Suggested Usage: Adults mix vigorously 1/2 teaspoon daily in water or as directed by physician.