enteric coated tablet
an oral dosage form in which a tablet is coated with a material to prevent or minimize dissolution in the stomach but allow dissolution in the small intestine. This type of formulation either protects the stomach from a potentially irritating drug (aspirin) or protects the drug (erythromycin) from partial degradation in the acidic environment of the stomach.
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Examples: glitazone, GI cocktail, etc.