Endocannabinoids are organically produced by the human body, generated by the endocannabinoid system. Endocannabinoids have been found to help in the regulation of sleep, pain and the responses of the immune system. Cannabis scientists have been investigating the role of physiological cannabinoids in tissue recovery and disease. It is fascinating that the endocannabinoids activate the same receptors as the psychoactive THC.
In this report, researchers reviewed 16 previously published studies testing the use of various cannabis-based medicines in the treatment of chronic neuropathic pain and found some evidence that cannabis-based medicines may help with pain relief and reduce pain intensity, sleep difficulties, and psychological distress. Side effects included sleepiness, dizziness, mental confusion. The authors concluded that the potential harm of such medicines may outweigh their possible benefit, however, it should be noted that the studies used a variety of cannabis-based medicines (e.g. inhaled cannabis and sprays and oral tablets containing THC and/or CBD from plant sources or made synthetically), some of which are more likely to result in these side effects than products without THC.