Studies on CBD and migraine are limited. The studies that currently exist also look at CBD when it’s paired with THC, not when it’s used alone.
However, results from a 2017 study indicate that CBD and THC can lead to less acute pain and less intense pain for people with migraine.
In this two-phase study, some participants took a combination of two compounds. One compound contained 9 percent CBD and almost no THC. The other compound contained 19 percent THC. Doses were taken orally.
In phase I, there was no effect on pain when the doses were under 100 mg. When the doses were increased to 200 mg, acute pain fell by 55 percent.
In phase II, participants who received the combination of CBD and THC compounds saw the frequency of their migraine attacks fall by 40.4 percent. The daily dose was 200 mg.