A substance that neutralizes or reduces stomach acidity.
The word "antacid" comes from the prefix "anti-" meaning "against" and "acid" which means "a substance that neutralizes acidity".
- The doctor recommended taking an antacid to relieve her heartburn.
- The pharmacist recommended an antacid for upset stomach.
- The patient took an antacid to reduce the acidity in their stomach.
- The patient took an antacid before eating to prevent indigestion.
- The patient took an antacid after eating to neutralize the acid in their stomach.