Pharmaceutical dosage forms for controlled release producing at least a timed pulse.

摘要

The present invention relates to delayed release coated cores comprising an active substance in their core and a polymer coating comprising at least one or more ammonio methacrylate copolymer, characterised in that the core comprises at least a surfactant ; to monolithic or multiparticulate pharmaceutical dosage forms comprising such delayed release coated cores and to their method of manufacture.