Vasa pharmachem pvt. Ltd. Manufactures magnesium hydroxide. Vasa pharmachem pvt. Ltd. Has obtained iso 9001:2000 certification. Magnesium hydroxide Is a bulky white to off white, odourless powder. Magnesium hydroxide is insoluble in water and decomposes on heating. Magnesium hydroxide is used in medicine in preparation of antacid tablets, syrups, oral suspension and also as osmotic laxative.