Naltrexone (NTX) is a general opioid receptor antagonist devoid of intrinsic activity that results in a compensatory elevation in endogenous opioids and opioid receptors.

Objective to investigate the effects of naloxone a competitive opioid receptor antagonist on spatial learning and memory deficits following concussive brain injury in rats.

Objective to investigate the effects of naloxone, a competitive opioid receptor antagonist, on spatial learning and memory deficits following concussive brain injury in rats.