Illinois cannabis labels must show total THC and hemp content by Nov. 1

Licensed cannabis businesses in Illinois have until Nov. 1, 2026, to put new information on product labels, under rule changes from the Illinois Department of Agriculture. The Marijuana Herald highlighted the approaching deadline in an Oct. 13 report.

According to the department's informational bulletin on its spring 2026 rule updates, the Joint Committee on Administrative Rules approved the department's Cannabis Regulation and Tax Act rule changes on April 14, 2026. The rule adds a requirement that product labels list a product's "Total THC," defined as THC plus THCA multiplied by 0.877, which the bulletin says should be calculated by the cannabis testing facility on the product's certificate of analysis.

Labels must already list four cannabinoids: THC, THCA, CBD and CBDA. Under the updated rule, labels must also list any other cannabinoid shown on the certificate of analysis at a concentration over 0.3% by weight or over 0.4 milligrams, the bulletin says. Labels must also indicate when a product contains hemp, either by listing hemp in the ingredient list or with a separate statement such as "This product contains Hemp."

The department said it will give licensees until Nov. 1, 2026, to implement the label changes, and that any change or addition to a product's ingredient list requires an updated product registration.

The same rule package formally adopted the department's policy on hemp inputs in cannabis products. According to the bulletin, only CBD, CBG, THCV and CBN in isolate form may be brought into a licensed facility, and only for infused products. Other changes cut several licensing fees and relaxed security camera footage storage requirements.