MAG365 Magnesium supplement is a powder with a highly bioavailable active ingredient magnesium citrate. All natural ingredients and no fillers. Magnesium is foundational to good health and over 350 body processes. Flavoured with natural flavour and Stevia. Ingredients: Magnesium Citrate (Created from Citric Acid and Magnesium Carbonate,) Natural flavouring, Steviol Glycosides.