Mon, 20 Nov 2017

Formulation and evaluation of fixed dose combination of sustain release Glipizide and conventional release of Telmisartan drug bi-layered tablet with guggul as binding agent

Habibuddin Mohammed *1, Devi Ramesh2, K.M. Ameer Hussain1, Touseef Humaira1

1.Adept Pharma And Bioscience Excellence Private Limited. Corporate office: 10-2-289/26, 26A, Shanti Nagar, Road No.# 2, Hyderabad, Andhra Pradesh, Pin 500028, India.

2.Government Polytechnic for Women, Gujarathipeta, Srikakulam, Andhra Pradesh, Pin 532005, India.


ABSTRACT

The emerging new fixed dose combination of Glipizide (GLZ) as sustained release and Telmisartan (TEL) as immediate release were formulated as a bilayer matrix tablet using guggul. Guggul used as a binding agent with three different concentrations (70%, 80%, and 90%; F1-F6) was used for the preparation of first layer of tablet containing glipizide. The conventional tablet of telmisartan was prepared as a second layer. Prepared bilayer tablets were studied for the in vitro release study carried out at pH 1.2 for first two hours and then at pH 6.8 for 6 hours using USP dissolution apparatus II (Basket). All the evaluation tests were found to be within the acceptance limits specified in Indian Pharmacopeia. The assay and dissolution study of tablets were done by HPLC which was developed and validated according to the ICH Q2 (B) guidelines. The contents of assay of the tablets were found to be 90.92% - 103.84% for F2-F5. The release of glipizide from the tablet was extended up to 8 h. Tablet containing 2.5 mg of glipizide with 80% of guggul release of drug after 8 h was found to be 82.36% and tablet containing 5 mg of glipizide with 90% guggul release of glipizide after 8 h was found to be 74.67%. The release pattern of each formulation (F2-F5) was fitted into the dissolution kinetics models and all the formulations were best fitted in the Higuchi model kinetic. From the results, we have concluded that the guggul act as a binding agent as well as rate retarding agent.

Keywords: Commiphora Mukul, Fixed dose combination, Glipizide, Guggul, High Pressure Liquid Chromatography, Method development, Telmisartan, Validation.

 


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