Potassium competitive acid blockers (PCABs) are used to treat gastroesophageal reflux disease (GERD), peptic ulcers, and Helicobacter pylori infections. PCABs work by blocking a protein on certain acid-producing cells in the stomach, which reduces the amount of acid your stomach makes. These medications are typically available in oral form. An example includes vonoprazan (Voquezna).
