Patent ID: 7138138

Claim:
A pharmaceutical formulation having a masked taste, the masking of which persists during administration of the formulation, in particular, in the form of a suspension in an aqueous vehicle, comprising: a)—a cellulosic polymer which is soluble in organic solvents but practically insoluble in water, regardless of the pH; a methacrylic polymer which is soluble in an acid medium and practically insoluble at a neutral or alkaline pH and an active ingredient distributed in a homogeneous manner and in the molecular state in the mixture, which is in the form of an atomized matrix; b) a pharmaceutically acceptable alkaline agent of an organic nature or an alkaline salt; and c) an adsorbent agent, wherein the cellulosic polymer and the methacrylic polymer are respectively ethylcellulose in an amount of from about 30% to about 50% by weight and a cationic polymer formed from 2-dimethylaminoethyl methacrylate and neutral methacrylates in an amount of from about 10% to about 25% by weight and wherein the alkaline agent and the adsorbent agent are respectively selected from the group consisting of meglumine, lysine, sodium and potassium citrate and sodium and potassium carbonate, and selected from the group consisting of magnesium aluminum silicate and talc.