Design, Development, Optimization and Evaluation of Ranolazine Extended Release Tablets.

OBJECTIVES

The objective of the current study was to develop an extended release (XR) tablet formulation for ranolazine using Eudragit L 100-55 and hydroxypropylmethylcellulose (HPMC) K100M in an appropriate composition. Ranolazine, an anti-anginal agent, is mainly used for treating chronic stable angina pectoris. The main advantage of this drug that it exhibits anti-ischemic effect, which was not influenced by either blood pressure or heart rate.

MATERIALS AND

METHODS

XR tablets of ranolazine were prepared using variable amounts of Eudragit L 100-55 and HPMC K100M in various proportions as per 32 factorial design by direct compression technique. The amount of polymers with desired sustained drug release was labeled as factors. On other hand, time taken for drug dissolution was labeled as responses (t10%, t50%, t75%, t90%).

RESULTS

Nine formulations were obtained as per design, developed, and evaluated for quality control parameters. The obtained results clear that all formulations pass the compendial limits. Data obtained from the dissolution study fitted well to kinetic modeling and kinetic parameters were determined. Polynomial equations were derived for responses and checked for validity.

CONCLUSION

RF5 composed of 31.25 mg of Eudragit L 100-55 and 31.25 mg of HPMC K100M, is the best formulation showing similarity f2: 85.78, f1: 2.32 with the marketed product (RANEXA). Formulation RF5 follows zero order, whereas the release mechanism was found to be non-fickian type (n= 0.65).