“To determine the effects of medical cannabinoids on pain, spasticity, and nausea and vomiting, and to identify adverse events.
Systematic reviews with 2 or more randomized controlled trials (RCTs) that focused on medical cannabinoids for pain, spasticity, or nausea and vomiting were included.
There is reasonable evidence that cannabinoids improve nausea and vomiting after chemotherapy.
They might improve spasticity (primarily in multiple sclerosis).
There is some uncertainty about whether cannabinoids improve pain, but if they do, it is neuropathic pain”