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Iowa Cannabis Possession Limits (2026)

Conditional: Cannabis possession is illegal in Iowa for anyone who is not a registered patient.

ConditionalVerified May 31, 2026

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Cannabis possession is illegal in Iowa for anyone who is not a registered patient. Registered patients are capped at 4.5 grams of THC per 90 days, and a practitioner may authorize more for terminal or established patients.

Official source: hhs.iowa.gov →

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