Ancient remedy, plausible mechanism, modern evidence still catching up.
Chart reviews of medical-cannabis patients report migraine frequency dropping substantially, but these are uncontrolled, self-reported series in people who chose cannabis. Promising signal, weak design.
Medical cannabis & migraine frequency, PubMed ↗Endocannabinoid deficiency is a live hypothesis in migraine pathophysiology: anandamide levels are altered in migraineurs, and CB1 activity modulates trigeminal pain pathways central to migraine. Mechanism does not equal treatment, but this one is not hand-waving.
Endocannabinoids & migraine mechanism, PubMed ↗Frequent use of any acute headache medication, and cannabis is used acutely by many patients, can itself drive chronic daily headache. Whether cannabis carries the same overuse risk as triptans or NSAIDs is unresolved and under-discussed.
Medication overuse headache, PubMed ↗The first placebo-controlled trials of vaporized cannabis for acute migraine attacks are recent and small, showing benefit over placebo for pain relief at two hours for some chemovars. Encouraging early data, not settled science.
Vaporized cannabis acute migraine trial, PubMed ↗Cannabis is not an approved treatment for migraine in most jurisdictions, and nothing here recommends using it. If migraine affects your life, bring this research, literally, these sources, to a physician and decide together. Laws differ by country and state; check CannabisLaws.ai before anything else.
Is it legal where you live? Tell us your city to see the law status and minimum age.
Status for all 64 jurisdictions on CannabisLaws. Not legal advice.