Henry Blooms Tri-Magnesium Citrate 900mg is specially formulated for Magnesium supplementation. Magnesium is an essential mineral involved in over 300 enzyme systems. It supports bone formation by regulating the absorption of calcium and is an important mineral required for normal nerve and muscle function. Tri-Magnesium Citrate may help relieve muscle cramps during pregnancy and helps the body metabolise carbohydrates and fats. It helps reduce duration of mild migraine. It also helps relive mild muscular spasms and reduce occurrence of muscle cramp.