Pepcid AC (generic: famotidine) is an over-the-counter medication used to prevent and treat heartburn due to acid indigestion and sour stomach. This medication also comes as a prescription, but this page will focus on the over-the-counter use of Pepcid AC.
Pepcid AC belongs to a group of drugs called H2 blockers, which work by reducing the amount of acid made in the stomach.
This medication comes in tablet form and is usually taken 1 to 2 times a day before a meal or snack.