Illinois marijuana businesses have until November 1 to comply with updated product labeling requirements that mandate the disclosure of total THC content and additional cannabinoids, according to guidance from the Illinois Department of Agriculture.
The changes, approved by the state’s Joint Committee on Administrative Rules on April 14, are part of a broader update to regulations under the Cannabis Regulation and Tax Act. Although the rules were approved earlier this year, the department gave licensed businesses until November 1, 2026, to implement the new labeling provisions.
Under the updated requirements, marijuana product labels must display “Total THC,” calculated by combining the product’s existing THC content with its tetrahydrocannabinolic acid (THCA) content multiplied by 0.877. The calculation accounts for the conversion of THCA into THC when marijuana is heated and must be reflected in the product’s certificate of analysis prepared by a licensed testing facility.
Illinois already requires product labels to identify THC, THCA, cannabidiol (CBD) and cannabidiolic acid (CBDA). The updated rules expand those disclosures to include other cannabinoids detected in concentrations exceeding 0.3% by weight or 0.4 milligrams, as reflected in laboratory testing results.
Products containing hemp-derived ingredients must also clearly disclose the presence of hemp. Businesses can satisfy this requirement by identifying hemp-derived substances in their ingredient lists or including a separate statement indicating that the product contains hemp.
The department also clarified that changes or additions to a product’s ingredient list require an updated product registration. Separate registrations are generally required for different strains, flavors and scents, although variations in package size do not require separate registrations.
The labeling changes are among several regulatory revisions approved this spring. Other provisions reduced certain licensing and administrative fees, modified security camera requirements and established additional standards for hemp-derived ingredients used in marijuana products.
According to the department’s informational bulletin, licensed marijuana businesses must complete the required labeling changes by November 1.
