Paracetamol analgesic mechanism of action is still poorly defined but mainly involves central inhibition of cyclooxygenases. Here we tested
the peripheral antinociceptive effects of paracetamol (intraplantar injections) in a rat model of neuropathic pain. Paracetamol dose-dependently
decreased mechanical allodynia and lowered nociceptive scores associated with hyperalgesia testing. These effects were inhibited by the
administration of cannabinoid CB1 (AM251) and CB2 (AM630) receptor antagonists. The participation of the peripheral cannabinoid system in
paracetamol analgesia is suggested.