Despite growing interest, cannabis-based medicines show no convincing advantage over placebo for chronic neuropathic pain. Small benefits were inconsistent, while side effects like dizziness and drowsiness were more common with THC-containing products. Credit: Shutterstock An updated Cochrane review reports that there is still no clear proof that cannabis-based medicines effectively relieve chronic neuropathic pain. Despite growing interest in these treatments, the latest evidence does not show