Research Journal of Pharmaceutical Dosage Form and Technology

Wajid Ahmad ¹, Rihan Sheikh ¹, Razia Ahmad ¹, Suhana Khan ¹

Affiliations
1 Department of Pharmaceutics, Institute of Pharmacy, Ankara,, TR

Abstract

Rifaximin treats traveler's diarrhea and irritable bowel syndrome by stopping the growth of the bacteria that cause diarrhea. Rifaximin treats hepatic encephalopathy by stopping the growth of bacteria that produce toxins and that may worsen liver disease. The short half life and high frequency of administration of drug makes it a suitable candidate for designing sustained drug delivery system. The aim of the present investigation was to develop a sustained release matrix tablet of Rifaximin using sodium alginate and cross linked sodium alginate and to evaluate the drug release kinetics. In order to achieve the required sustained release profile, the tablets were prepared by a wet granulation method. The formulated tablets were characterized for pre-compression and post-compression parameters and they were in the acceptable limits. The drug release data obtained after an in vitro dissolution study was fitted to various release kinetic models in order to evaluate the release mechanism and kinetics. The criterion for selecting the best fit model was linearity (coefficient of correlation). Drug release mechanism was found to follow a complex mixture of diffusion, swelling and erosion. The dosage form holds the potential to control the release rate of drug and extend the duration of action of a drug.

Keywords

Verapamil HCl, Matrix Tablet, Cross Linking, Sodium Alginate, Drug Release.

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Wajid Ahmad ¹, Rihan Sheikh ¹, Razia Ahmad ¹, Suhana Khan ¹

Affiliations
1 Department of Pharmaceutics, Institute of Pharmacy, Ankara,, TR

Abstract

Orally directed medications totally ingest just when they show reasonable dissolvability in gastric medium and such medications shows great bioavailability. The solvency and disintegration properties of medications assume a significant part during the formulation development. Greater part of the disappointments in the new medication improvement have been credited to poor water dissolvability of medication. It is widely accepted that poor waterdissolvability is quite possibly the most every now and again experienced troubles in the field of pharmaceutics. Low solvency and ensuing unacceptable disintegration rate regularly bargain oral bioavailability. There are most remedial specialists used to create fundamental impacts by oral course that are the favored method of organization inferable from its few benefits and high quiet consistence contrasted with different courses. Thusly the current methodologies being utilized for BCS class II medications, along with retention enhancers, can be applied to detail class IV compound. Effervescent Assisted Fusion Technique, Solvent Evaporation method,Microemulsion, Liposomes are some imperative methodologies regularly utilized to improve the dissolvability of ineffectively water dissolvable medications. Determination of technique for solvency upgrade relies on drug qualities like dissolvability, substance nature, melting point, retention site, actual nature, pharmacokinetic conduct, etc, measurement structure necessity like tablet or capsule formulation, strength, quick or modified release. This review features the novel strategies accessible for improving solvency, disintegration and bioavailability of medications with poor fluid dissolvability.

Keywords

Solubility Enhancement, Drug Release, Nanocrystallization, BCS, Novel Techniques.

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