Grapefruit juice potentiates the anti-inflammatory effects of diclofenac on the carrageenan-induced rat's paw oedema.

Pharmacol Res

Department of Pharmacology, College of Medicine, King Saud University, P. O. Box 22452, Riyadh 11495, Saudi Arabia.

Published: January 2002

The anti-inflammatory effect of diclofenac alone or in combination with double strength grapefruit juice was investigated on carrageenan-induced rat's paw oedema. Paw was measured by using a plethysmometer 3 h after injecting the phlogestic agent. There was significant inhibition (P< 0.05) of the oedematous response after oral administration of diclofenac alone (1, 2.5, 5 mg kg(-1)p.o.) in a dose-dependent manner. Coadministration of grapefruit juice (10 ml kg(-1)p.o.) orally with all doses of diclofenac, enhanced the inhibitory effect of diclofenac on rat's paw oedema. Double-strength grapefruit juice has synergistic inhibitory effect on rat's paw oedema when administered in combination with diclofenac.

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http://dx.doi.org/10.1006/phrs.2001.0856DOI Listing

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