Browsing by Author "Deveswaran, R."

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    Development Of Sustained Release Tablets Containing Solid Dispersions Of Baclofen
    (University of Eloued جامعة الوادي, 2013-07-01) Janardhana, K. H.; Deveswaran, R.; Bharath, S.; Basavaraj, B. V.; Madhavan, V.
    Sustained release tablets containing solid dispersions granules of a poorly water soluble drug were prepared to investigate the controlled release of the drug. Baclofen was chosen because of its poor water solubility and short eliminationhalf-life. Poloxamer 188 and PEG 6000 were used as solid dispersion carrier. Free flowing solid dispersion granules were prepared by adsorbing the melt of the drug and carriers onto the surface of an adsorbent, Carbopol 934P followed by direct compression with HPMC K4M and HPMC K100 to obtain an solid dispersion loaded sustained release tablets. FTIR studies confirmed that the compatibility of drug and carriers. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) revealed partially amorphous structures of the drug in solid dispersion granules. The solid dispersion granules dissolved completely within 30 min, which was much faster than that of pure drug baclofen. The sustained release of baclofen from the solid dispersion containing tablet was achieved for 2 h in gastric fluid (pH 1.2) and for up to 10 h in intestinal fluid (pH 6.8). A combination of solid dispersion techniques using adsorption and sustained release concepts is a promising approach to control the release rate of poorly water-soluble drugs.
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    Synthesis And Evaluation Of β-cyclodextrin-epichlorohydrin Inclusion Complex As A Pharmaceutical Excipient
    (University of Eloued جامعة الوادي, 2015-05-01) Poornima, K.n.; Deveswaran, R.; Bharath, S.; Basavaraj, B.v.; Madhavan, V.
    A water soluble Beta-cyclodextrin-epichlorohydrin complex (β-CDEPI) was synthesized by one-step condensation polymerization. Drug- β-CDEPI inclusion complexes were prepared and characterized. Inclusion complexes prepared using lyophilization technique was used to formulate orodispersible tablets. Compatibility studies showed no interaction and characterization proved substantial inclusion complex formation. Drug content was found between 97-99%. In-vitro disintegration time was found to be less than 3 minutes and all the formulations showed complete drug release of 100% within 15 minutes. The formulations were found to be stable for a period of 6 months. β-CDEPI polymer enhances the solubility and thus effectively can be utilized to improve the aqueous solubility of poorly water soluble drugs.