Optimization of floating bilayered tablets of Ketorolac Tromethamine

H. Jain, Kinjal D. Patel, N. Savant, U. Upadhyay
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Abstract

Objective : The aim of the present study was to formulate the floating bilayer tablets of Ketorolac tromethamine, first immediate release layer and second sustained release floating layer which would provide initial loading dose of drug and remain in stomach and upper part of GIT for prolonged period of time in a view to maximize solubility of drug which is necessary for its absorption. Methods : The floating bilayered tablets of Ketorolac tromethamine were prepared by using 3 2 factorial designs by direct compression method. For this, polymers like sodium starch glycolate and polyox WSR 303 were used in various concentrations. Sodium bicarbonate was used as a floating effervescent agent. The formulations were evaluated for hardness, friability, weight variation, swelling index, floating lag time, floating time, % CDR etc Results : From the result obtained, S3 having 23 % Polyox WSR 303 and 12 % sodium bicarbonate showed better results. Conclusions : The results showed that Polyox WSR is promising tool to designing of sustained release formulation.
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酮咯酸Tromethamine漂浮双层片的优化
目的:制备酮咯酸三甲基胺第一速释层和第二缓释漂浮层双层漂浮片,提供药物的初始负荷剂量,并在胃和胃粘膜上半部分停留较长时间,以最大限度地提高药物的溶解度,为吸收提供必要条件。方法:采用32因子设计,采用直接压缩法制备酮咯酸三甲胺浮动双层片。为此,使用了不同浓度的聚合物,如淀粉乙醇酸钠和多元氧WSR 303。用碳酸氢钠作为浮动泡腾剂。对配方的硬度、脆性、重量变化、膨胀指数、漂浮滞后时间、漂浮时间、CDR %等进行了评价。结果表明,含23%多氧WSR 303和12%碳酸氢钠的S3效果较好。结论:Polyox WSR是一种很有前途的缓释制剂设计工具。
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