Narendra Prabhudas Chotai

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and scale-up of the manufacturing process); and (4) to develop new formulations. In formulation development, dissolution testing can aid in the selection of excipients, the optimization of the manufacturing process, and the formulation of a test product to match the release of the reference product (2, 3). The solubility, permeability, dissolution, and(More)
OBJECTIVE Microencapsulation of the anti-inflammatory drug aceclofenac (ACE) was investigated as a means of controlling drug release and minimizing or eliminating local side effects. METHOD Microspheres were prepared by a spray-drying technique using solutions of ACE and three polymers, namely, carbopol, chitosan, and polycarbophil, in different weight(More)
The objective of this investigation was to prepare mucoadhesive microspheres of ketorolac for nasal delivery to avoid gastrointestinal side effects of conventional dosage form. Mucoadhesive microspheres were prepared using carbopol, polycarbophil and chitosan as polymer by spray drying method. The process and formulation parameters were varied to study the(More)
Good Manufacturing Practice (GMP) is a set of regulations, codes, and guidelines for the manufacture of drug substances and drug products, medical devices, in vivo and in vitro diagnostic products, and foods. GMP term that is recognized worldwide for the control and management of manufacturing and quality control testing of pharmaceutical products. Everyone(More)
Statistical comparison of dissolution profiles under a variety of conditions relating to formulation characteristics, lot-to-lot, and brand-to-brand variation attracts interest of pharmaceutical scientist. The objective of this work is to apply several profile comparison approaches to the dissolution data of five-marketed aceclofenac tablet formulations.(More)
The objective of this investigation was to formulate ocular inserts of gatifloxacin sesquehydrate to achieve controlled drug release. Drug reservoir was prepared using hydrophilic polymers, namely polyvinyl alcohol and polyvinyl pyrrolidone. The rate controlling membrane was prepared using hydrophobic ethyl cellulose by solvent casting method. Ocular(More)
The US Food and Drug Administration's (FDA's) guidance for industry on dissolution testing of immediate-release solid oral dosage forms describes that drug dissolution may be the rate limiting step for drug absorption in the case of low solubility/high permeability drugs (BCS class II drugs). US FDA Guidance describes the model-independent mathematical(More)
The objective of the present investigation was to prepare mucoadhesive microspheres of ketorolac for nasal administration by means of a solvent evaporation technique using carbopol (CP), polycarbophil (PL) and chitosan (CS) as mucoadhesive polymers. The prepared microspheres were characterized for morphology, swelling behavior, mucoadhesion, interaction(More)
The objective of this investigation was to achieve controlled drug release of Aceclofenac (ACE) microspheres and to minimize local side-effects in the gastrointestinal tract (GIT). Sustained release chitosan microspheres containing ACE were prepared using double-emulsion solvent evaporation method (O/W/O). Chitosan microspheres were prepared by varying drug(More)
Oxcarbazepine is a poorly water-soluble (0.083 mg/ml) anti-epileptic drug according to the BCS system (class II) and its dissolution is rate-limiting step for its absorption. The objective of this work was to develop tablet formulations of oxcarbazepine-beta-cyclodextrin (OX-beta-CD) binary systems. Three types of binary systems--physical mixtures, kneaded(More)