Gastroretentive hydrodynamically balanced systems of ofloxacin: In vitro evaluation

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• 作者：Amit Kumar Nayak ; ^{amitkrnayak@yahoo.co.in} ; Biswarup Das ; Ruma Maji
• 关键词：Hydrodynamically balanced system ; Gastroretention ; Drug release ; HPMC K4M ; Ofloxacin ; Capsules
• 刊名：Journal of the Saudi Pharmaceutical Society
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：21
• 期：1
• 页码：113-117
• 全文大小：733 K

文摘

Hydrodynamically balanced systems (HBSs) of ofloxacin were prepared using lactose, HPMC K4M, PVP K 30, and liquid paraffin, which may increase the mean residence time in the gastrointestinal tract, and may be able to provide maximum drug at the site of absorption to improve oral bioavailability. All these formulated HBS capsules were floated well over 6 h with no floating lag time. They also showed sustained drug release over 6 h. Time for 50 % release of ofloxacin was within the range, 2.47 ¡À 0.02 to 3.07 ¡À 0.08 h. The in vitro drug release from these HBS capsules was dependent on HPMC K4M, PVP K 30, and liquid paraffin content. The drug release pattern of these HBS capsules containing ofloxacin followed the Higuchi model with the anomalous transport mechanism.