Indigestion and heartburn – usually brought on by overindulgence – can be relieved with Geri-Mox.. Each 5 mL (teaspoon) contains 200 milligrams aluminum hydroxide; 200 milligrams magnesium hydroxide and 20 milligrams simethicone .. Comparable to Maalox® Original – a registered trademark of IPS Trust .. Bottle contains 12 ounces of liquid antacid..