PROCESS FOR PREPARING PHARMACEUTICAL PREPARATIONS CONTAINING N-/2-FURFURYL/-4-CHLORO-5-SULPHAMOYL-ANTRANILIC ACID WITH A RETARD EFFECT

摘要

A method for treating hypertonia with a preparation of N-(2-furfuryl)-4-chloro-5-sulfamoyl-anthranilic acid having a slightly retarded release, wherein the release of the active substance in vitro, measured in the flow through-cell to Dibbern, is not more than 5% after 1 hour in a buffer solution of pH 1.5 and about 10 to at most 25% of the active substance content after a two-hour treatment in a buffer solution of pH 5.5.