How much cannabis can I possess in Iowa with an MMJ Card?

In Iowa, you can possess the following amounts with a valid MMJ Card:

  • Patients are allowed to buy products containing up to 4.5 grams of total THC in a 90-day period. Treating physicians can recommend more THC for terminally ill patients or others who haven't been helped enough by 4.5 grams per 90 days with a waiver form.

Approved products all come from one manufacturer and they are available in four different CBD to THC ratios:

  • 20:1
  • 2:1
  • 1:1
  • 1:20 

Approved medical administration methods include:

  • Nebulizable (used in a nebulizer, which converts liquid medication into a breathable mist)
    • Oral
    • Capsules
    • Liquids
    • Sublingual
  • Tablets
  • Tinctures
  • Suppositories
    • Rectal
    • Vaginal
  • Topical forms
    • Creams
    • Gels
    • Lotions
    • Ointments
    • Transdermal patches
  • Vaporizable (Vapes) 


There is also a 4.5g THC per 90-days' Waiver Form

There are two exceptions to the '4.5g per 90-day purchase limit, below:

  • For any patient certified for a terminal illness (a healthcare practitioner may indicate more THC per 90-days at the time of certification)
  • If the patient's healthcare practitioner certifies them for additional THC, after the patient has participated in the program. 

This form below is to be utilized by healthcare practitioners to increase a patient's 'THC per 90-day' purchase limit after participation in the program. The specific allotment of THC per 90-days must be indicated by the healthcare practitioner:

4.5g THC Waiver Form