Formulation and evaluation of colon targeted matrix tablet of ibuprofen

Abstract

The present work involves the formulation of colon targeted matrix tablet of Ibuprofen by using direct compression method. Literatures regarding, Ibuprofen tablet dosage form preparation, excipients selection, manufacturing method etc., has been collected and reviewed. In this work, selection of excipients was done based on a literature review. Excipients include Eudragit S100, Ethyl cellulose, Lactose, Talc, Magnesium stearate. Quantities of the excipients were selected performing FT-IR method which is an HIS of Fourrts India Laboratory. Preformulation studies have also been performed to study the nature of API and compatibility of API with excipients by physical observation and FT-IR studies. The result showed that API was compatible with all the excipients selected. The tablets were formulated by direct compression method using the selected excipient quantities. The formulated tablets were tested for both pre-compression parameters and post compression parameters as per requirements of standards. Pre-compression parameters such asbulk density, tapped density, compressibility index, Hausner’s ratio and compressibility index. The results obtained indicate that it has good flow property for direct compression. The formulated Ibuprofen matrix tablets were coated with enteric polymer Eudragit FS30D by pan coating method. The prepared tablets were evaluated for weight variation, hardness, thickness, friability, drug content, and disintegration time and in-vitro dissolution studies. All these parameters were found to be within the standard limits. Comparative studies of coated Ibuprofen tablets and uncoated Ibuprofen tablets are evaluated for the hardness, thickness, in-vitro dissolution studies and disintegration time. Out of six formulations, the formulation F6 showed 98.51% drug release at 24 hrs. Since it provide greater protection to the core under acidic condition while at the same time show the fastest drug release under intestinal pH. So the formulation F6 was considered as the confirmatory trial and it was subjected for stability studies up to three months of accelerated stability 400C ± 2C0, 75 %± 5 % RH and found to be within limits.