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Hakim, Lukman
Faculty of Pharmacy Universitas Gadjah Mada Yogyakarta
Medicine & Pharmacology

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A Preformulation of a Water Soluble Furosemide Dosage Form Syukri, Yandi; Yuwono, Tedjo; Hakim, Lukman
Indonesian Journal of Pharmacy Vol 13 No 1, 2002
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.369 KB) | DOI: 10.14499/indonesianjpharm0iss0pp50-54

Abstract

Solid dispersion system of water-insoluble furosemide in polyvinylpirolidon (PVP) was prepared by a solvent method in various ratios of 1 : 1, 1 : 3, 1 : 5, 1 : 7 and 1 : 9 of the drug and PVP, respectively in order to improve furosemide solubility and dissolution. The improvement of furosemide solubility was studied by a solubility method in a shaking waterbath. The solubility test showed that various concentrations of PVP and temperature gave statistically significant increased of furosemida solubility (P < 0,05). The dissolution study of furosemide solid dispersion system was done using a dissolution tester at the rotation rate of 50 rpm. Furosemide concentration released was determined spectrophotometrically using a UV spectrofometer. This test showed a significant increased of furosemida solubility (P < 0,05), but with a prolonged of releasing time.Key Word : solid dispersion, solubility, dissolution, bioavailability.
The effect of extract Kaempferia galanga rhizomes on the elimination kinetics of quinidine in rabbits Hayati, Farida; Hakim, Lukman
Indonesian Journal of Pharmacy Vol 14 No 4, 2003
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.269 KB) | DOI: 10.14499/indonesianjpharm0iss0pp177-181

Abstract

The research was aimed to observe the effect of the juice of Kaempferia galanga rhizomes on quinidine elimination kinetics in rabbits. The study on interaction of extract Kaempferia galanga rhizomes to quinidine elimination kinetic was conductedly employing a cross randomized design using male rabbits which were divided into 3 groups (6 rabbits for each group). The groups were given a single oral quinidine 30 mg/kg BW as a control group and were conferred single oral extract “kencur” 4.8 mi/kg BW each dose for 4 days prior to the treatment with quinidine. Serial blood samples(0,2 ml) were withdrawn at various interval time via the ear marginal for spectrofluorometric analysis of unchanged quinidine in blood. The concentration of quinidine was determined using a standard curve and the concentration to time data was used to determine quinidine elimination kinetics i.e. Clt and MRT. The results indicated that extract “Kencur” was found to decrease quinidine clearance 17,19% and 7,07% (P>0,05) and increase quinidine MRT198,89% and 71,70% (p>0,05).Key words : Kaempferia galanga rhizomes, quinidine, elimination
Co-Authors Hayati, Farida Yandi Syukri Yuwono, Tedjo