Fig. 4.
Log dose–response curves for antihyperalgesia induced by IBU, CEL, PAR, and LEV in a model of somatic inflammatory hyperalgesia in rats at the time of peak effects. Each point represents the mean ± SEM obtained in 6-9 animals. %AH = percentage of antihyperalgesic activity; CEL = celecoxib; IBU = ibuprofen; LEV = levetiracetam; PAR = paracetamol.