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Pharmaceutical Quality of Selected Metronidazole and Ciprofloxacin Infusions Marketed in South Eastern Nigeria

Authors Oli AN, Ibeabuchi MU, Enweani IB, Emencheta SC

Received 15 January 2020

Accepted for publication 11 June 2020

Published 14 July 2020 Volume 2020:12 Pages 103—112


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Siew Siang Chua

Angus Nnamdi Oli,1 MaryRose Ukamaka Ibeabuchi,1 Ifeoma Bessie Enweani,2 Stephen Chijioke Emencheta1,3

1Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria; 2Department of Medical Laboratory Science, Faculty of Health Sciences and Technology, Nnamdi Azikiwe University, Nnewi Campus, Nnewi, Anambra State, Nigeria; 3Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, Enugu State 41001, Nigeria

Correspondence: Ifeoma Bessie Enweani Tel +234-8037743790

Background: Pharmaceutical products need to be of good quality and it is even more critical when it comes to life saving medicaments like infusions.
Objective: This research surveyed the quality fitness of some ciprofloxacin and metronidazole infusion samples marketed in South-eastern of Nigeria.
Methods: Using Official Compendial methods, microbiological quality, active pharmaceutical ingredients quantitation, pH and particle count tests were evaluated on eighty infusion bottles (from eight pharmaceutical companies) of each of the two drugs.
Results: Out of the sixteen brands tested, 2 metronidazole brands and 1 ciprofloxacin brand (representing 18.75% of the total 16 brands/makes) were contaminated while the remaining 13 brands (81.25%) were found sterile. The active pharmaceutical ingredients quantitative assay showed that all the brands of ciprofloxacin infusion were between the 95% and 105% limit of label claim while one metronidazole brand has < 95– 110% limit label claim. Six brands each of the two drugs evaluated fall below the acceptable pH range [ciprofloxacin (3.5– 4.6) and metronidazole (4.8– 5.2)], while the other two brands of both drugs passed the test. In the antibacterial study, Pseudomonas aeruginosa and Escherichia coli were susceptible to the ciprofloxacin (5 μg). However, Salmonella typhi recorded inhibition zone diameters within resistant and intermediate range. Peptostrepococcus spp was susceptible (at minimum inhibitory concentrations of 100 μg/mL) to all the brands of metronidazole, while none of the brands were effective on Lactobacillus spp. All the brands passed the test for particulate contamination. The particles size range was < 10μm.
Conclusion: About eighty-one percent (81.25%) of the infusions have acceptable good microbiological quality. However, 18.75% that failed the tests is a concern knowing that these are lifesaving products.

Keywords: intravenous infusions, quality assessment, ciprofloxacin, metronidazole, quality medicines

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