The invention concerns coated granules including (A) at least one amine-containing pharmacological active principle, preferably as an acid addition salt, the pharmacological active principle being complexed by low cation-exchange resin containing carboxylic acid groups (COO''), and (B) at least 15 wt. %, based on the total weight of the active principle/low cation-exchange resin complex, of at least one hydrophilic adsorbent, the mixture of the components (A) and (B) being coated with a gastrosoluble polymer. The invention also concerns a method for preparing such granules, as well as orodispesible tablets containing such granules.