At the moment, cannabis use for any purpose is a crime in Missouri.
Under the state laws, possession of up to 35 grams of marijuana is a misdemeanor entailing a maximum sentence of 1 year in prison and a $1,000 fine. Possession of between 35 grams and 30 kilograms is punishable by a 1-year prison term and a fine of up to $5,000. A person who has larger amounts of the substance may face harsher penalties.
Selling less than 5 grams of cannabis may result in imprisonment for 7 years and a fine of up to $5,000. Penalties for selling up to 30 kilograms include a $20,000 fine and a sentence of 5-15 years in jail. Furthermore, distribution within 2,000 feet of a school or 1,000 feet of a public housing zone entails a $20,000 fine and a 10-year incarceration.
For cultivation, one may receive a very serious sentence—between 10 years and life imprisonment—with no probation or parole and a maximum fine of $20,000.
Patients with intractable epilepsy are allowed to use marijuana extracts that contain five percent or more CBD and 0.3 percent or less THC.