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Year : 2008  |  Volume : 50  |  Issue : 1  |  Page : 51-53

Antidepressant-like activity of tramadol in mice


Department of Pharmacology, Maulana Azad Medical College, New Delhi, India

Correspondence Address:
Bhupinder Singh Kalra
Department of Pharmacology, Maulana Azad Medical College, Bahadur Shah Zafar Marg, New Delhi - 110 002
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5545.39760

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Objective: To evaluate antidepressant-like effect of tramadol in mice. Materials and Methods: Tramadol was administered at three different doses (10, 20, and 40 mg/kg, i.p.) once daily for 7 days to Swiss albino mice of either sex. The immobility period of control and drug-treated mice was recorded in forced swim test (FST). The antidepressant effect of tramadol was compared to that of fluoxetine (20 mg/kg, i.p.), administered for seven successive days. Results: Tramadol produced significant antidepressant effect at all the three (10, 20, and 40 mg/kg) doses, as indicated by reduction in immobility times of drug-treated mice compared to control mice. The efficacy of tramadol at doses of 10 and 20 mg/kg was comparable to that of fluoxetine, but antidepressant activity in animals administered with tramadol 40 mg/kg was significantly less as compared to fluoxetine-pretreated mice. Conclusion: The results of the present study indicate antidepressant-like activity of tramadol.



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