Jakir Ahmed Chowdhury

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This investigation describes the preparation and in vitro evaluation of gastroretentive floating tablet of theophylline. Two hydrophilic cellulose derivatives, Methocel K100M and Methocel K15MCR were evaluated for their gel forming and release controlling properties. Sodium bicarbonate and citric acid were incorporated as gas generating agents. The effects(More)
Diclofenac sodium loaded agarose beads were prepared and release profile of Diclofenac Sodium was investigated. Beads were prepared by dropping a hot aqueous agar solution into a beaker of chilled Paraffin oil and water. Water was made acidic to the pH of 1.65 using concentrated hydrochloric acid to reduce the prior diffusion of Diclofenac sodium into(More)
Controlled release co-matrix tablets of Ciprofloxacin HCl were prepared with different types of bioadhesive polymers e.g. Methocel K4M, Methocel K 15M CR and Methocel K 100LV, Povidone K-30, and Xanthan gum. Tablets prepared by direct compression method were subjected to in-vitro drug dissolution study for 8 hours in a simulated gastric fluid media using(More)
Controlled release matrix tablets of theophylline anhydrous were designed with different types of bioadhesive polymers. HPMC 15 cps and 50 cps, Na-CMC, Gelatin, Xanthun gum and PVP K-30 were selected to formulate matrix tablets. Tablets of theophylline were prepared by direct compression method and were subjected to in vitro drug dissolution for 8 hrs in a(More)
ISSN:0975-1459 The present study was considered out to investigate the effects of various physicochemical factors such as compression force, pH of dissolution medium, amount of HPMC (hydroxyl propyl methyl cellulose) on Eudragit NE 30D and Eudragit RS 30D based matrix tablet of Theophylline. Here tablets were prepared using hydraulic press at different(More)
BACKGROUND Our present study was conducted to characterize the phytoconstituents present in the aqueous extract of Momordica charantia and evaluate the antimicrobial efficacy of silver-extract nanoparticles (Ag-Extract-NPs). METHODS Silver nanoparticles (AgNPs) were prepared by reducing AgNO3; and NaBH4 served as reducing agent. After screening of(More)
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