Abeprazan hydrochloride is an effective reversible potassium-competitive acid blocker with oral activity, inhibiting H+, K+ -atPase by competitive binding to potassium ions without acid activation. Abeprazan hydrochloride is a proton pump inhibitor (PPI) that acts by reducing gastric acid production and is used to treat gastric acid-related disorders, such as gastroesophageal reflux disease (GERD) and peptic ulcers.