Patent ID: 8603525

Claim:
Orally disintegrating multilayer tablet comprising at least two discrete layers, one layer of which comprises at least one active agent that promotes the oxidation of opioids and the other layer of which contains opioid granules, said opioid granules including an inert core which is coated with at least one opioid and at least one binder, wherein said opioid coating is coated with a subcoat comprising a compound soluble in gastric fluids, wherein the subcoat limits the degradation of the opioid, said subcoat being coated with a taste-masking coating comprising a dialkylaminoalkyl(meth)acrylate copolymer and a pore-forming agent selected from the group consisting of a hydrophilic polymer soluble in gastric fluids and a binder, said opioid coating and said subcoat being free of any dialkylaminoalkyl(meth)acrylate copolymer.