news HEALTH Marijuana cuts migraine and headache pain in half Scientists determined inhaled marijuana reduced the severity of self-reported pain 47.3% for headaches and 49.6% for migraines By Brendan Bures, The Fresh Toast A clinical trial, as Science Daily first reported, found that cannabis could be more effective at reducing headache pain than ibuprofen, though the researchers used nabilone, a synthetic cannabinoid drug, in the trial. iStock / Getty Images Plus