Here is an overview of the medical marijuana laws in Iowa:
1979 - 1981 - Iowa's administrative rules allowed for medical use of marijuana through a therapeutic research center.
2014 - CBD oil is legalized by Senate Bill 2360. Senate Bill 2360 allows the possession or use of cannabidiol that has less than 3% tetrahydrocannabinol for the treatment of intractable epilepsy, through the written recommendation of a neurologist. The bill states that the cannabidiol must be obtained from an out-of-state source and "recommended for oral or transdermal administration".
2017 - Expansion of medical CBD program. Branstad signed into law an expanded Medical Cannabidiol Act, which expanded the number for diseases for treatment. These diseases include cancer, chronic pain, multiple sclerosis, HIV/AIDS, Crohn’s disease, Parkinson’s disease, and more.
2020 - Further expansion of the Medical CBD program and maximum THC waiver form is established. Governor of Iowa, Kim Reynolds approved House File 2589. This Act was an update to the existing legislation regarding the medical cannabidiol act and marijuana. The amendments included, but are not limited to further additions to the list of conditions for patients to qualify for medical cannabis and also a change to the maximum amount of THC which may be given to patients in a 90 day period.