Last verified: April 2026
The Foundational Statute: Chapter 124E
The Iowa Medical Cannabidiol Act is codified at Iowa Code Chapter 124E and implemented through 641 IAC 154 and 641 IAC 156 (consumable hemp). Originally enacted as Chapter 124D in 2014, the statute was renumbered to 124E in 2017 when the program was substantially restructured.
Senate File 2360 (2014) — the bill that started everything — was introduced by Senator Joe Bolkcom (D-Iowa City), chair of the Senate Ways and Means Committee. Gov. Terry Branstad signed it on May 30, 2014. The original statute was one of the country’s most narrow CBD-only laws: cannabidiol oil with no more than 3% THC, intractable epilepsy patients only, neurologist certification required.
The 2017 restructure (HF 524) expanded the qualifying-condition list, opened in-state manufacture, and established a regulatory framework. The 2020 expansion (HF 2589) raised the THC cap to its current 4.5g/90 days and added persistent pain. The 2022 expansion (SF 599) added autism and severe pain expansion.
The Iowa Medical Cannabidiol Act was renumbered from Chapter 124D to Chapter 124E in 2017. The Iowa Department of Health and Human Services administers it through the Office of Medical Cannabidiol.
Iowa Code Chapter 124E and 641 IAC 154
Two Agencies, One Office
The Iowa Department of Health and Human Services (HHS) houses the Office of Medical Cannabidiol (OMC), which administers the program. Patient registration, healthcare-practitioner certification, manufacturer and dispensary licensing, and the medical board (Iowa Medical Cannabidiol Board, 8 advisory members) all run through OMC. The Iowa Medical Cannabidiol Board reviews petitions to add new qualifying conditions and recommends program improvements to the legislature.
The Iowa Department of Public Safety regulates security and inspections. The Iowa Department of Inspections, Appeals, and Licensing handles certain licensing functions.
Patients, Practitioners, and Penetration
As of 2024-2025 reporting:
- ~18,000 active patients (~0.5% of state population)
- Roughly 2,500 healthcare practitioners have certified at least one patient
- Comparison: typical medical cannabis enrollment rates of 2–4% in neighboring states with broader programs
- Patient growth has been slow but steady, despite the program’s constraints
Patient cards run $100/year for Iowa residents ($25 reduced fee for those qualifying), with broad qualifying conditions documented at the qualifying conditions page. Healthcare practitioner certification is via OMC portal.
The 4.5g THC Cap — The National Anomaly
The single most consequential rule in the Iowa program is the 4.5-gram-per-90-days cap on the active ingredient THC. Every other medical cannabis state caps product weight (e.g., 2.5 oz over 14 days). Iowa caps the THC mass itself.
Math: a typical 1-gram vape cartridge contains 700–800 mg THC. A patient gets roughly six vape carts per 90 days — about one cart every two weeks. Patient advocates cite this cap as the central reason Iowa enrollment has stayed below 1% of the state population. Healthcare practitioners can recommend exceeding the cap for terminal illness or hospice cases. See the 4.5g cap.
The Five Dispensaries
Iowa has only 5 licensed dispensaries for the entire state of 3.2 million people:
- Bud & Mary’s — Council Bluffs (western Iowa, Missouri River border)
- Iowa Cannabis Co. — Davenport (Quad Cities)
- MedPharm Iowa — Sioux City (NE/SD tri-state border)
- MedPharm Iowa — Windsor Heights (Des Moines metro)
- MedPharm Iowa — Waterloo (eastern Iowa, Cedar Valley)
Two licensed manufacturers supply the network: MedPharm Iowa (Des Moines) and Bud & Mary’s (Council Bluffs). Both are vertically integrated. See the five dispensaries.
What’s Allowed (and What Isn’t)
Allowed: oils, tinctures, capsules, creams/topicals, vapes, gum, powder, suppositories, nebulizable solutions, lozenges. Limited gummy approval came in 2024.
NOT allowed: smokable flower (raw cannabis), traditional edibles in food form (brownies, cookies, chocolates, baked goods), beverages. The smokable-flower prohibition is among the strictest in the country — most medical states allow it. See products & rules.
No Out-of-State Reciprocity for Purchase
Iowa does not recognize out-of-state medical cards for purchase. Out-of-state patients can possess (with limits) under Iowa Code §124E.11, but cannot purchase from Iowa dispensaries. The card application is Iowa-resident-only with a $100 fee ($25 reduced). See visiting patients.
Explore the Medical Program
Official Sources
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org