The objective of this study was to formulate and evaluate of sustained
release matrix tablet of Tizanidine Hydrochloride by direct compression technique.
Tizanidine hydrochloride tablets were prepared by melt direct compression technique
using xanthum gum, guar gum, Glyceryl behenate, Glyceryl monostearate and Stearic
acid in different proportion. Formulated sustain release tablets were evaluated for
appearance, dimensions (diameter and thickness), weight variation, hardness,
friability, drug content and in-vitro release of Tizanidine hydrochloride. Optimized
batch was compared with marketed preparation. The result indicated the formulation
containing Glyceryl behenate (30%) showed the release profile similar to marketed
preparation with satisfactory physical properties of tablet. It is feasible to formulate
sustained release tablet of Tizanidine hydrochloride with acceptable physical
properties which could be amenable to replication on an industrial scale.