Jamieson Magnesium 250 mg is a high-potency, highly absorbable natural complex of three magnesium sources that helps develop and maintain bones and supports muscle function. Also Contains Cellulose, vegetable stearic acid, modified cellulose gum, water-soluble cellulose, titanium dioxide, silica, hydroxypropyl cellulose. NO sugar, starch, gluten, lactose, artificial flavours or preservatives Warning Some people may experience diarrhea.Adults: Take 1 caplet twice daily.Store between 15°C and 25°C, away from children. Serving Size1 caplet, 2 times daily