Evaluation of anti-nociceptive effect of venlafaxine in experimental animal model of mice


  • Sandeep Kumar Bandapati Pharmacovigilance Physician, Vigi Medsafe, Hyderabad, Telangana, India
  • Karuna Sree Podila Department of Pharmacology, ESIC Medical College and Hospital, Sanathnagar, Hyderabad, Telangana, India
  • Yadala Venkata Rao Department of Pharmacology, Kamineni Institute of Medical Sciences, Narketpally, Telangana, India




Venlafaxine, Tramadol, Tail immersion test


Background: Pain is an unpleasant sensation with varying subjective experience. Its management is always challenging for physicians particularly in case of chronic pain. Chronic pain and depression usually co-exist due to poor quality of life and increase in health care costs posing an individual to suffer from depression. Anti-depressants for pain management are being used successfully using since years. In this study venlafaxine, a newer anti-depressant drug was evaluated for anti-nociceptive activity, tail immersion test an analgesic animal model of albino mice.

Methods: Randomly selected albino mice of either sex with reaction time of <6 seconds were included in the study and divided into 7 groups with 6 mice in each group. Grouping was done based on the drug received i.e., venlafaxine 15, 30 and 60 mg/kg, tramadol 10 and 20 mg/kg, control group (normal saline) and combination group venlafaxine 15 mg/kg+tramadol 10 mg/kg. Drugs were administered by intra-peritoneal route.

Results: Venlafaxine (30 and 60 mg/kg), tramadol (20 mg/kg) and combination group venlafaxine (15 mg/kg+tramadol 10 mg/kg) has shown significant (p<0.001) increase in tail withdrawal latency compared to control group (normal saline) by tail immersion test. Venlafaxine potentiated anti-nociceptive activity of tramadol on concomitant administration with tramadol. Venlafaxine at 60 mg/kg has comparable anti-nociceptive effect to tramadol at 20 mg/kg.

Conclusions: Venlafaxine at doses of 30 and 60 mg/kg is having anti-nociceptive effect, but less potent than tramadol.


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How to Cite

Bandapati, S. K., Podila, K. S., & Rao, Y. V. (2019). Evaluation of anti-nociceptive effect of venlafaxine in experimental animal model of mice. International Journal of Basic & Clinical Pharmacology, 8(12), 2598–2603. https://doi.org/10.18203/2319-2003.ijbcp20195263



Original Research Articles