Abstract: A chewable dosage form containing a histamine H2-receptor antagonist in an amount which is effective to treat a gastrointestinal disorder is provided in a palatably acceptable form. The dosage form comprises granules containing the histamine H2-receptor antagonist, which are provided with a taste-masking coating comprising a water-insoluble, water-permeable methacrylate ester copolymer in which the coating is applied to the granules in an amount which provides a taste-masking effect for a relatively short period during which the composition is being chewed by a patient, but which allows substantially immediate release of the histamine H2-receptor antagonist after the composition has been chewed and ingested.