Cannabis in Ohio is only legal for medical use.

Ohio legalized cannabis for medical use in 2016 through the enactment of House Bill 523.

Within Ohio’s medical use framework patients may possess up to a 90-day supply of cannabis at once. The formula for calculating a 90 day supply was revised in 2021. As of January 2022, a 90 day supply for patients with non-terminal illness includes up to 9 ounces of plant material, 26.55 grams of THC in the form of a patch for transdermal administration, lotion, cream, or ointment, 9.9 grams of THC in the form of  Oil, tincture, capsule, or edible for oral administration or 53.1 grams of THC in the form of Oil for vaporization. These limits are increased for patients with terminal illnesses. Patients are not allowed to grow their own cannabis at home.