Asian Journal of Physics  Vol. 31 No 2, 2022, 355-364

Drug-drug interaction: the case of flubendazole and doxycycline hyclate investigated by Raman spectroscopy
Ilirjana Bajama, Luisa Andronie, Simona Cinta Pinzaru


This paper expands the applicability of Raman spectroscopy in veterinary field, aiming to search for spectroscopic signature of the drug-drug interaction between Rombendazole and Doxycycline hyclate, commercially available for veterinary use and prescribed in poultry with simultaneous nematodes and respiratory infections. The failure of treatment in chickens with symptoms of respiratory infections and parasitic worms, who were given the combination of Rombendazole and doxycycline hyclate triggered and motivated this study, to (1) identify the active ingredients in commercially formulated Rombendazole tablets; and (2) to investigate the Raman spectroscopy signature of the mixed, kneading product of the two drugs in solid phase, consistent with the simultaneous administration, in search for their direct molecular interaction as a possible cause of vet treatment failure. Raman spectroscopy enabled the identification of flubendazole as the genuine active ingredient of commercial Rombendazole and found changes in Raman signature of the active ingredient in spectra of solid mixtures, due to the possible interaction of flubendazole through the N atom from benzimidazole ring with the doxycycline. The high degree of overlap between the Raman spectra of the two compounds raised additional difficulties along with the co-existence of excipients, however, spectral evidence of interaction between the two solid drugs are reported. © Anita Publications. All rights reserved.
Keywords: Rombendazole, Doxycycline hyclate, Veterinary drugs, Raman Spectroscopy,

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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