Good Health Magnesium Easy-to-swallow is a small size capsule which as its name suggests is easy to swallow. This is an everyday low strength magnesium which is easy on digestion and therefore less likely to cause tummy upsets. 150mg elemental magnesium per capsule is a good maintenance dose for nerve, muscle and sleep support. Magnesium Easy-to-swallow is a natural marine sourced magnesium derived from seawater that also contains 72 additional trace minerals.