MS HB459

Extends the repeal date of Harper Grace's Law from July 1, 2017 to July 1, 2020, allowing continued research and medical use of CBD oil.

Defines CBD oil as cannabis extract containing more than 15% cannabidiol or at least 50 milligrams per milliliter, with no more than 0.5% tetrahydrocannabinol.

Restricts CBD oil to physician-ordered treatment for patients with debilitating epileptic conditions, obtained from and dispensed by University of Mississippi entities only.

Provides affirmative legal defense against marijuana possession charges for patients or guardians using CBD oil pursuant to physician orders, and prohibits child removal based solely on authorized CBD oil possession.

Grants immunity from prosecution to state employees involved in research, cultivation, processing, or dispensing of CBD oil related to treatment of epileptic conditions.