Aqua Mag-Cl™ is a liquid magnesium chloride supplement, supplying 200 mg of magnesium per teaspoon.* One (1) teaspoon (5 ml) each day as a dietary supplement or as otherwise directed by a healthcare professional. Serving Size: 1 Teaspoon (5ml) Amount Per Serving Magnesium ... 200mg (as magnesium chloride) Other Ingredients: Water and potassium sorbate. Does not contain gluten or dairy. Keep out of reach of children. Store in a cool, dry area. Caution: Use only as recommended. Magnesium chloride is generally well tolerated. Most side effects are due to toxicity (hypermagnesemia). Mild hypermagnesemia is generally well tolerated, but severe hypermagnesemia can affect the nervous and cardiovascular system. Therefore, magnesium chloride may be contraindicated in patients with renal impairment or marked myocardial disease.