Current cannabis product labels may not effectively communicate THC dose to consumers

The review identified that consumers struggle with numeric THC information (mg vs. percentage), THC levels are communicated inconsistently across product types (flower, edibles, concentrates), and current labels provide little guidance on how THC content translates to actual consumption amounts for specific products.

Policy review examining cannabis labeling and packaging regulations across legalized jurisdictions. Identified five principles for effective cannabis labeling: numeric THC labeling, standard servings, dose expression across product forms, and dose-unit packaging.

As cannabis markets expand, adverse events from high-potency products (especially edibles) have increased. Effective labeling is one of the most basic consumer protection tools, yet current practices may leave users unable to control their intake.

The gap between THC content information and actual dose understanding mirrors challenges in alcohol and food labeling. Getting this right could meaningfully reduce adverse events, especially among new or infrequent users who are most vulnerable to overconsumption.

Policy analysis without original data collection. Limited empirical evidence on consumer comprehension of cannabis labels. Recommendations are theoretical and untested.