Lifestream natural magnesium is a naturally derived marine source extracted from seawater which naturally contains magnesium salts it is manufactured by filtration blending and heat drying without the need for adding preservatives or chemical products to form a highly bio available and concentrated dose of elemental magnesium lifestream natural magnesium powder is tasteless and provides 350mg of magnesium in a one third teaspoon dose and is designed to offer the benefits of a magnesium supple