Formulation, In-Vitro Evaluation and Comparative Study Ofitopride Hydrochloride Loaded Sustained Release Matrix Tablet Using Okra Mucilage as a Natural Binder

Abstract

Natural polymers are abundantly available in plants with their wider pharmaceutical applications and are preferred more than some synthetic polymers because of their biodegradable, biocompatible and non-toxic properties. The study aims to formulate Itopride Hydrochloride loaded Sustained Release (SR) matrix tablet from the mucilage extracted from okra plant (Abelmoschus esculantus) and carry out the comparative study on the release retardant effect of synthetic binders like HPMC K100M and sodium carboxymethyl cellulose and their combinations. The extraction of the mucilage was carried by the maceration process. The formulation of Itopride loaded SR matrix tablet was carried by moist granulation technique. The micrometric, physiochemical studies and purity tests confirms the suitability of mucilage as an excipient. Pre-compression study suggests good flow property of the powders. The minimum angle of repose was observed in F7 with 29.03±0.6º and F2 exhibited maximum angle of repose with 34.30±0.5º. Carr's index and Hausner's ratio was lower in F1 with 11.56±0.4 and 1.11±0.3 respectively. Drug-excipient interaction study performed using FTIR spectrophotometry suggested no interaction between the drug and excipients. The in-vitro drug release of Itopride Hydrochloride loaded SR tablet up to 12 hours in 0.1 N HCl was conducted and observed to be maximum in F3 with 87.34±5.33% and minimum in F6 with 77±5.65 %. Drug release from the formulations were significant compared to the marketed product of Itopride Hydrochloride (p<0.05). The data were analyzed by Tukey post hoc multiple comparison test.