Treatment of Acid-Related Disorders with Gastric Acid Inhibitors: The State of the Art

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Abstract
Since their introduction in 1976, and until recently, the H2-receptor antagonists have been the ‘state-of-the-art’ gastric acid inhibitors, but the advent of omeprazole, the acid pump inhibitor, has necessitated a reassessment of therapy for acid-related diseases. In making this reassessment, the following therapeutic goals should be considered: rapid and reliable therapeutic effect, safety, simple treatment regimen, resolution of recurrence, and cost-effectiveness. Extensive clinical evidence indicates that omeprazole offers an advance over the H2-receptor antagonists in achieving these goals. A series of meta-analyses shows that omeprazole gives more rapid symptom relief and more reliable healing than the H2-receptor antagonist, ranitidine, in uncomplicated duodenal ulcer (DU), in uncomplicated gastric ulcer (GU) and in reflux oesophagitis (RO). By contrast with the H2-receptor antagonists, refractoriness leading to failure to heal is virtually unknown with omeprazole. Omeprazole also fulfils the goal of therapeutic safety, and this has been documented in extensive short- and long-term clinical and laboratory studies. Omeprazole has a simple treatment regimen: 20 mg once daily is recommended in the routine treatment of DU, GU and RO. As a result of its high therapeutic success rate, omeprazole is also cost-effective. Taking all these factors into account, it is concluded that omeprazole approaches the therapeutic targets set for the treatment of acid-related disorders.

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