Sustained release solid dosage preparations

摘要

A sustained release solid dosage preparation is provided comprising an active ingredient admixed with an excipient. At least part of the excipient consists of glucomannan microparticles having an average particle size less than 50µm. The glucomannan microparticles forms, when absorbing water, a hydrogel matrix for the active ingredient capable releasing the active ingredient almost entirely up about 6 hours.