Metiamide is a drug that belongs to the class of histamine H2 receptor antagonists. This medication is commonly used for treating duodenal ulcers and gastroesophageal reflux disease. However, there are several synonyms for Metiamide that could be useful to know. Some of these synonyms include Cimetidine, Ranitidine, Famotidine, and Nizatidine. These drugs have similar mechanisms of action and are used to reduce the amount of acid produced by the stomach. Although they may have different brand names, these drugs are equally effective in treating a variety of gastrointestinal issues. Therefore, if Metiamide is not readily available, your healthcare provider may consider prescribing any of these alternatives to help alleviate your symptoms.