Natures Plus Magnesium Powder Orange 504g. Orange Flavour. Nature's Plus Magnesium powder is a natural nutritional support which can aid relaxation and overall well-being.. Each serving contains an impressive 400mg of natural magnesium, it is in a highly bioavailable citrate meaning it can be easily absorbed by the body.. Directions. Add 1 heaping scoop in 237ml of water/juice daily.. Ingredients. Magnesium (as citrate) 400 mg, Natural orange flavor, citric acid, xylitol, organic stevia, natural color (anatto), non-GMO maltodextirn, potassium hydroxide.