Synergistic interaction between dexamethasone and tramadol in a murine model of acute visceral pain

Christian Dürsteler, Hugo F. Miranda, Raquel Poveda, Anna Mases, Eulalia Planas, Margarita M. Puig

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

14 Citas (Scopus)


Tramadol is effective in the management of mild to moderate postoperative pain, but its administration is associated with nausea and vomiting. Patients treated with tramadol, often receive dexamethasone as antiemetic. The aim of our investigation was to assess if the two drugs interact in a murine model of acute visceral pain. Using the acetic acid writhing test in mice, we assessed the antinociceptive effects of tramadol and dexamethasone (a glucocorticoid with antiemetic effect) administrated individually and in a 1 : 1 fixed ratio combination. Tramadol and dexamethasone induced a dose-dependent inhibition of the writhing response when administered individually, with ED50 values of 2.9 [2.09-4.31, 95% confidence limit (CL)] mg/kg, and 0.13 (0.05-0.29, 95% CL) mg/kg, respectively. The ED50 of the combination was 0.13 (0.01-0.29, 95% CL) mg/kg; the isobolographic and interaction index analysis revealed a synergistic interaction. The results suggest that the combination of tramadol and dexamethasone could be beneficial in the management of postoperative pain in humans.

Idioma originalInglés
Páginas (desde-hasta)515-520
Número de páginas6
PublicaciónFundamental and Clinical Pharmacology
EstadoPublicada - sep. 2007

Áreas temáticas de ASJC Scopus

  • Farmacología
  • Farmacología (médica)


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