Antacid Suspensions are a way for people to consume the medicine in antacids quickly and easily. They are made up of dry, powdered ingredients that dissolve in water. The powder can be mixed into any drink or food, such as a glass of water or a bowl of cereal, and the liquid will dissolve into a liquid suspension. Antacid Suspensions can be purchased in packages of 50 grams or 100 grams.