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SOLUBILITY ENHANCEMENT OF POORLY WATER SOLUBLE DRUG CELECOXIB

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About Authors:
Mr. Pranab Prakash Panigrahi1*, Mr. Ajit Kumar Acharya2
1B.Pharm, ROYAL COLLEGE OF PHARMACY AND HEALTH SCIENCES, BERHAMPUR
2Asst.Professor, ROYAL COLLEGE OF PHARMACY AND HEALTH SCIENCES, BERHAMPUR

*pranab.panigrahi@rediffmail.com

INTRODUCTION
Poorly water-soluble drugs often require high doses in order to reach therapeutic plasma concentrations after oral administration. Improvement in the extent and rate of dissolution is highly desirable for such compounds, as this can lead to an increased and more re-producible oral bioavailability and subsequently to clinically relevant dose reduction and more reliable therapy. More than 40% of newly discovered drugs have little or no water solubility presents a serious challenge to the successful development and commercialization of new drugs in the pharmaceutical industry. Now a days, pharmaceutical technology provides many approaches to enhance the dissolution rate of poorly soluble drugs. Physical modifications often aim to increase the surface area, solubility and/or wet ability of the powder particles and are therefore focused on particle size reduction or generation of amorphous states [Hancock, 1997 & Grau, 2000]. Several methods have been employed to improve the solubility of poorly water soluble drugs. A solid dispersion technique has been used by various researchers who have reported encouraging results with different drugs. The first drug whose rate and extent of absorption was significantly enhanced using the solid dispersion technique was sulfathiazole by Sekiguchi and Obi (Sekiguchi, 1961)1.

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SCREENING OF DIURETIC AGENTS-AN OVERVIEW

About Authors:
*Nilesh Sovasia, Prof.Sanjeev Thacker, Arshad Hala
Seth G.L.Bihani S.D.College Of Technical Education,
Institute Of Pharmaceutical Science & Drug Research,
Sri Ganganagar,Rajasthan,India
*nilesh.sovasia@yahoo.com

ABSTRACT
Diuretic agents are very useful for several critical conditions like hypertension, heart failure, renal failure, nephrotic syndrome, and cirrhosis.The various methods for screening of Diuretic agents provides useful tool to evaluate the safety and effectiveness of the drugs.It is also useful for determining the dose lavel of particular class of diuretic agents.

UV- SPECTROPHOTOMETRIC METHOD DEVELOPMENT FOR THE DETERMENATION OF PARACETAMOL AND DROTAVERINE HYDROCHLORIDE IN COMBINATION TABLET DOSAGE FORM BY SIMULTANEOUS EQUATIONS METHOD

About Authors:
Rambabu.CH*, V. V. V. S. P. Apparao, Miss. M.  Muthulakshmi, V. Ananth.
aPG-Student, Department Of Pharmaceutical Analysis,
KMCH College of Pharmacy,
Kalapatti Road, Coimbatore– 641 048, INDIA.
*ramgepharma@gmail.com

ABSTRACT:
At present, simultaneous determination of drugs in the combination dosage forms has been enjoying renaissance in the field of pharmaceutical analysis. Paracetamol, a classical antipyretic in combination with a novel antispasmodic drug, drotaverine hydrochloride provides a synergistic effect in the treatment of spasms. From the reviewed literature, it was simultaneous uv-spectrophotometric methods have not yet been developed for the determination and quantification of paracetamol and drotaverine hydrochloride. The λmax of paracetamol is 257 nm and that of drotaverine hydrochloride were scanned and found to be 308 nm, 352 nm. Both paracetamol and drotaverine hydrochloride were found to have significant absorbance of the λmax   of each other and total absorbance was equal to the sum of the absorbance of paracetamol and drotaverine hydrochloride individually measured. So the present study involves the uv-spectrophotometric method development for the simultaneous determination of paracetamol and drotaverine hydrochloride by using simultaneous equations method. The mean % recoveries from this method were found to be 100.76% and 100.17% for paracetamol and drotaverine hydrochloride respectively proving that the method is accurate.

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ESTIMATION OF TEMOZOLOMIDE BY USING RP-HPLC IN ITS PHARMACEUTICAL DOSAGE FORM

About Authors:
Segu Sairam*, Mulla Mahaboob Basha, S Ananda Thangadurai, V Kranthi kumar
Swamy vivekanandha college of pharmacy, dept. Of pharmaceutical analysis,
Elayampalayam, tiruchengode – 637205.
*Sairampharma2020@gmail.com

ABSTRACT
A simple, sensitive and specific method reverse phase - high performance liquid chromatography (RP-HPLC) have been developed and validated for the estimation of Temozolomide in its Pharmaceutical dosage form.
Estimation of Temozolomide by using RP-HPLC coupled with UV

An isocraticREVERSE PHASE - HIGH PERFORMANCE LIQUID CHROMATOGRAPHY method was developed and validated for the estimation of Temozolomide in its Pharmaceutical dosage forms. The separation of the analytes was performed on aDevelosil ODS MG.5 (150×4.6mm),5µm, with mobile phase containing (0.5% w/v glacial acetic acid) named as Solution-A  :  Methanol  [90 : 10, v / v] was used. The flow rate was 1 ml min-1 and separation was monitored by UV detection at 254 nm. Chromatogram showed peak at a retention time of 7.306 ± 0.009 min. validation of the method for linearity and range, intra-day and inter-day precision, accuracy, specificity, recovery, ruggedness, robustness and limits of detection and quantification were obtained as 0.598 µg / ml and 1.81 µg / ml respectively. The calibration plot was linear from 20-60 µg ml-1 and the correlation coefficient was 0.999.The proposed method is fast, accurate and precise for the quantitative determination of Temozolomide capsules.

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