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      Validated Spectrophtometric Method for Simultaneous Determination of Buprenorphine and Naloxone in Pharmaceutical Dosage Forms

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          Abstract

          Buprenorphine is a partial mu agonist and kappa antagonist which is used for the treatment of pain and opioid addiction. A mixture of buprenorphine hydrochloride and naloxone hydrochloride has been approved for the treatment of opioid dependence.

          In this study a third order derivative spectrophotometric method based on zero-crossing technique has been used for the simultaneous determination of buprenorphine hydrochloride and naloxone hydrochloride in tablets. The measurements were carried out at wavelengths of 257.8 (zero-crossing point of naloxone hydrochloride) and 252.2 nm (zero-crossing point of buprenorphice hydrochloride) for buprenorphine hydrochloride and naloxone hydrochloride, respectively in the third order derivative spectra obtained in methanol and 0.1 M NaOH (50:50) as solvent. The method was found to be linear in the range of 20-80 µg/mL for buprenorphine hydrochloride and 5-20 µg/mL for naloxone hydrochloride. The within-day and between-day coefficient of variation and error values were less than 2.5% and 1.8%, respectively. The proposed method was successfully used for simultaneous determination of these drugs in pharmaceutical dosage form without any interference from excipients or need to prior separation before analysis.

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          Most cited references 30

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          Pharmacokinetics of the combination tablet of buprenorphine and naloxone.

           C. Chiang (2003)
          The sublingual combination tablet formulation of buprenorphine and naloxone at a fixed dose ratio of 4:1 has been shown to be as effective as the tablet formulation containing only buprenorphine in treating opiate addiction. The addition of naloxone does not affect the efficacy of buprenorphine for two reasons: (1) naloxone is poorly absorbed sublingually relative to buprenorphine and (2) the half-life for buprenorphine is much longer than for naloxone (32 vs. 1 h for naloxone). The sublingual absorption of buprenorphine is rapid and the peak plasma concentration occurs 1 h after dosing. The plasma levels for naloxone are much lower and decline much more rapidly than those for buprenorphine. Increasing dose results in increasing plasma levels of buprenorphine, although this increase is not directly dose-proportional. There is a large inter-subject variability in plasma buprenorphine levels. Due to the large individual variability in opiate dependence level and the large variability in the pharmacokinetics (PK) of buprenorphine, the effective dose or effective plasma concentration is also quite variable. Doses must be titrated to a clinically effective level for individual patients.
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            Simultaneous determination in hair of multiclass drugs of abuse (including THC) by ultra-high performance liquid chromatography–tandem mass spectrometry

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              Development and validation of a HPLC method for the determination of buprenorphine hydrochloride, naloxone hydrochloride and noroxymorphone in a tablet formulation.

              A simple isocratic reversed-phase high-performance liquid chromatographic method (RP-HPLC) was developed for the simultaneous determination of buprenorphine hydrochloride, naloxone hydrochloride dihydrate and its major impurity, noroxymorphone, in pharmaceutical tablets. The chromatographic separation was achieved with 10 mmol L(-1) potassium phosphate buffer adjusted to pH 6.0 with orthophosphoric acid and acetonitrile (17:83, v/v) as mobile phase, a C-18 column, Perfectsil Target ODS3 (150 mm x 4.6mm i.d., 5 microm) kept at 35 degrees C and UV detection at 210 nm. The compounds were eluted isocratically at a flow rate of 1.0 mL min(-1). The average retention times for naloxone, noroxymorphone and buprenorphine were 2.4, 3.8 and 8.1 min, respectively. The method was validated according to the ICH guidelines. The validation characteristics included accuracy, precision, linearity, range, specificity, limit of quantitation and robustness. The calibration curves were linear (r>0.996) over the concentration range 0.22-220 microg mL(-1) for buprenorphine hydrochloride and 0.1-100 microg mL(-1) for naloxone hydrochloride dihydrate and noroxymorphone. The recoveries for all three compounds were above 96%. No spectral or chromatographic interferences from the tablet excipients were found. This method is rapid and simple, does not require any sample preparation and is suitable for routine quality control analyses.
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                Author and article information

                Journal
                Iran J Pharm Res
                Iran J Pharm Res
                IJPR
                Iranian Journal of Pharmaceutical Research : IJPR
                Shaheed Beheshti University of Medical Sciences (Tehran, Iran )
                1735-0328
                1726-6890
                Winter 2017
                : 16
                : 1
                : 112-119
                Affiliations
                [a ] Department of Medicinal Chemistry, Faculty of Pharmacy and Drug Design and Development Research Center, Tehran University of Medical Sciences, Tehran, Iran.
                [b ] Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Azad University, Tehran, Iran.
                [c ] Research and Development, Kish Medipharm Company, No. 64, Kish Free Zone Island, Iran.
                Author notes
                [* ]Corresponding author: E-mail: souri@sina.tums.ac.ir
                Article
                ijpr-16-112
                5423238
                e135d583-7e85-45ab-84f0-8eb0a3cb6ce0
                ©2017 by School of Pharmacy, Shaheed Beheshti University of Medical Sciences and Health Services

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, ( http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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