MO HB1421

Removes marijuana from Schedule I controlled substances and allows its medical use by qualifying patients with debilitating medical conditions including cancer, HIV/AIDS, epilepsy, multiple sclerosis, and other chronic conditions approved by a physician.

Permits qualifying patients to possess an adequate supply defined as up to 3 mature plants, 4 immature plants, and 1 ounce of usable marijuana per mature plant, with protection from arrest and prosecution.

Establishes a registry identification card system administered by the Department of Health and Senior Services for qualifying patients and primary caregivers, with a registration fee not to exceed $100.

Allows registered nonprofit organizations to lawfully cultivate, distribute, and dispense medical marijuana to qualifying patients and caregivers in accordance with department rules and oversight.

Makes the entire act subject to voter approval through referendum election on the first Tuesday following the first Monday in November 2012, becoming effective only if approved by a majority of votes cast.