H2 blockers are used for the treatment of gastroesophageal reflux disease and esophagitis. They have also been used in combination with antibiotics for the treatment of peptic ulcers.
The different types of H2 blockers are:
For more information on these medications, and others, please go to Drugs A to Z
Sources:
"Effectiveness of Therapies for GERD" American College of Gastroenterology. 22 Apr 2008
Kenneth R. DeVault M.D., F.A.C.G., and Donald O. Castell M.D., M.A.C.G., "Updated Guidelines for the Diagnosis and Treatment of Gastroesophageal Reflux Disease." doi: 10.1111/j.1572-0241.2005.41217.x. American College of Gastroenterology. 22 Apr 2008
"Pharmacodynamic Aspects of Hz-Blockers versus proton Pump Inhibitors." U.S. Food and Drug Administration. 22 Apr 2008
"Understanding Some of the Medications Often Prescribed for GERD & Ulcers." Common GI Problems: Volume 1. American College of Gastroenterology. 22 Apr 2008

