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Comparison of analgesic, anti-inflammatory and anti-pyretic efficacy of diclofenac, paracetamol and their combination in experimental animals

Supriya D. Malhotra, Devang A. Rana, Varsha J. Patel.

Abstract
Background: Various combinations of analgesics antipyretic drugs are available in the market for treatment of various musculoskeletal disorders and pain relief. Diclofenac and paracetamol combination is most commonly used combination and its rationality is questionable. The objective of this study was to compare the analgesic, anti-inflammatory and anti-pyretic activities of diclofenac, paracetamol and their combination.
Methods: Experimental animals were divided into 4 different groups control, diclofenac, paracetamol and their combination. Analgesic activity was compared by using tail-clip method in rats and writhing test in mice, anti-inflammatory activity was compared by carrageenan paw edema method using plethysmometer and anti-pyretic action was compared using TAB vaccine induced pyrexia and measuring the rectal temperature. Different doses of diclofenac (1mg/kg and 2mg/kg) and paracetamol (10mg/kg and 20mg/kg) used and same doses were used in combination group.
Results: Diclofenac sodium (1mg/kg) showed significantly higher analgesic activity using tail-clip and writhing method compared to paracetamol (10mg/kg) (p

Key words: Analgesic, Anti-inflammatory, Anti-pyretic, Combination, Diclofenac, Paracetamol



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