Research Journal of Pharmaceutical Dosage Form and Technology

Chinmaya Keshari Sahoo ¹, Surepalli Ram Mohan Rao ², Muvvala Sudhakar ³

Affiliations
1 Department of Pharmaceutics, University College of Technology, Osmania University, Hyderabad, Telangana-500007., IN
2 Mekelle Institute of Technology, Mekelle University, Mekelle, ET
3 Department of Pharmaceutics, Malla Reddy College of Pharmacy, Maisammaguda, Secunderabad, Telangana-500014., IN

Abstract

The present study was undertaken to develop controlled porosity osmotic pump tablets of zidovudine-lamivudine combination. The tablets were prepared by wet granulation method using HPMC E5LV, and osmogen was prinicipal ingredients a dose of 300mg zidovudine-150 mg lamivudine twice daily. The coating solution of core tablets were prepared by using cellulose acetate, poly ethylene glycol of different grades, sorbitol and acetone to quantity sufficient for different batches. The prepared tablets were evaluated for pre-compression parameters, post compression parameters, in vitro drug release study and scanning electron microscopy study. Among developed formulations CS4 batch show 96.31% drug release in 8 h for zidovudine and 97.83% for lamivudine in 8 h. The in vitro release kinetics were analyzed for different batches by different pharmacokinetic models such as zero order, first order, Higuchi, Korsmeyer Peppas and Hixon-Crowell model. The result of optimized formulation was independent of the pH and agitation intensity. Short term stability study (at 40±2ºC / 75±5% RH for three months) on the best formulation indicated that there were no significant changes in thickness, friability, weight variation, drug content and in vitro drug release.

Keywords

AIDS, Wet Granulation, In Vitro Drug Release, Stability Study.

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Chinmaya Keshari Sahoo ¹, Surepalli Rammohan Rao ², Muvvala Sudhakar ³, D. Venkata Ramana ⁴, Kanhu Charan Panda ⁵

Affiliations
1 Department of Pharmaceutics, University College of Technology, Osmania University, Hyderabad, Telangana-500007., IN
2 Mekelle Institute of Technology, Mekelle University, Mekelle, ET
3 Department of Pharmaceutics, Malla Reddy College of Pharmacy (Affiliated to Osmania University), Maisammaguda, Secunderabad, Telangana-500014, IN
4 Department of Pharmaceutical Technology, Netaji Institute of Pharmaceutical Sciences, Toopranpet, Yadadri Bhongir, Telangana – 508252, IN
5 Department of Pharmaceutics, Anwarul Uloom College of Pharmacy, Newmallepally, Hyderabad, Telangana, IN

Abstract

Osmotic drug delivery system (ODDS) provides the drug dose and dosing interval in optimized manner to maintain drug concentration within therapeutic window thus ensuring efficacy and minimizing toxic effects. The objective of ODDS is to release pharmacologically active ingredients in a predetermined, predictable and reproducible manner to systemic circulation. ODDS delivers a drug to large extent is independent of the physiological factors of the gastrointestinal tract, pH. Hence it can be utilized for systemic as well as targeted delivery of drugs. The release of drugs from osmotic system controls the drug release by controlling various formulation factors such as solubility, osmotic pressure of the core components, size of the delivery orifice and nature of the rate controlling membrane. The design of osmotic system is achieved by optimizing formulation and processing factors to deliver drugs in preprogrammed rate and controlled manner. In present study is an update on osmosis, different types of osmotic systems, components of ODDS, key parameter sand some patents.

Keywords

Osmotic Drug Delivery System, Osmosis, Osmotic Pressure.

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