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Kochar, N. I.
- Method Development and Validation of Ramipril and Amlodipine Besylate by RP-HPLC
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Authors
Affiliations
1 Department of Quality Assurance, P.W. College of Pharmacy, Dhamangaon Road, Yavatmal, 445001, IN
1 Department of Quality Assurance, P.W. College of Pharmacy, Dhamangaon Road, Yavatmal, 445001, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 12 (2011), Pagination: 1829-1832Abstract
A simple isocratic RP-HPLC method has been developed and subsequently validated for the determination of Ramipril and Amlodipine Besylate in pharmaceutical dosage forms within very short retention time. The method employs an Xterra C18 column, 5 μ, 150 mm x 4.60 mm id with flow rate of 1.5 ml/min using UV detection at 210nm. The separation was carried out using a mobile phase consisting of Sodium Lauryl Sulfate buffer by adjusting pH 2.5 and final composition is Buffer: Acetonitrile: Methanol (45:16.5:38.5)V/V. The retention time for Ramipril and Amlodipine Besylate was found to be 3.1 minutes and 3.8 minutes respectively. The results of analysis were validated statically and by recovery studies. Hence the proposed method was found to be accurate, precise, reproducible and specific and can be used for simultaneous analysis of these drugs in tablet formulation.Keywords
RP-HPLC, Sodium Lauryl Sulfate Buffer, Ramipril, Amlodipine Besylate.
- Design, Development and Optimization of Extended Release Matrix Tablet for Broad Spectrum Antibiotics
Abstract Views :292 |
PDF Views:6
Authors
Affiliations
1 P. Wadhwani College of Pharmacy, Yavatmal (M. S.), IN
1 P. Wadhwani College of Pharmacy, Yavatmal (M. S.), IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 9, No 2 (2017), Pagination: 41-44Abstract
A floating extended release formulation of a broad spectrum antibiotics containing ciprofloxacin and Amoxicillin have been prepared by a unique blend of polymer (HPMC) matrix, NaHCO3 (Sodium bicarbonate) and other excipients in a optimized ratio to achieve an extended or delayed drug release profile up to 12 hours without any chemical interaction between drug and excipients. A unique blend of polymer matrix has been made by two different grades (K4M-low viscosity and K15M-high viscosity) of 'hydroxypropylmethyl cellulose' (HPMC) in a optimized ratio of 1: 35.66 (HPMC K4M: HPMC K15M) to reach the targeted drug release profile. The in vitro dissolution study shows that the floating tablets are capable of drug release over a period of 12 hours. The treated data are fitted into various kinetic models and R2 values are evaluated. The analysis shows that the drug release from the floating matrix followed Higuchi release kinetics more preferably. As the "n" (release exponent) values of Krosmeyer-Pappes model of most of the formulation batch are in the range of 0.5-0.89 and 0.89-1.0.Keywords
Floating Extended Release Formulation, Ciprofloxacin, Amoxicillin, Higuchi Release Kinetics, Krosmeyer-Pappes Model.- In-Vitro Evaluation Study of Extended Release Matrix Tablet of Ciprofloxacin and Amoxicillin
Abstract Views :160 |
PDF Views:0
Authors
Affiliations
1 P. Wadhwani College of Pharmacy, Yavatmal (M. S.), IN
1 P. Wadhwani College of Pharmacy, Yavatmal (M. S.), IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 9, No 3 (2017), Pagination: 123-130Abstract
A floating extended release formulation of a broad-spectrum antibiotics containing ciprofloxacin and Amoxicillin have been prepared by a unique blend of polymer (HPMC) matrix, NaHCO3 (Sodium bicarbonate) and other excipients in a optimized ratio to achieve an extended or delayed drug release profile up to 12 hours without any chemical interaction between drug and excipients. A unique blend of polymer matrix has been made by two different grades (K4M-low viscosity and K15M-high viscosity) of 'hydroxypropylmethyl cellulose' (HPMC) in an optimized ratio of 1: 35.66 (HPMC K4M: HPMC K15M) to reach the targeted drug release profile. The in vitro dissolution study shows that the floating tablets are capable of drug release over a period of 12 hours. The treated data are fitted into various kinetic models and R2 values are evaluated. The analysis shows that the drug release from the floating matrix followed Higuchi release kinetics more preferably. As the “n” (release exponent) values of Krosmeyer- Pappes model of most of the formulation batch are in the range of 0.5 – 0.89 and 0.89- 1.0.Keywords
Floating Extended Release Formulation, Ciprofloxacin, Amoxicillin, Higuchi Release Kinetics, Krosmeyer- Pappes Model.References
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