Delta-8 THC Products Carry Big Doses And Few Warnings

Study Finds Delta-8 THC Labels Too Confusing To Be Useful, And The Cartoons Don’t Help

A single gummy listed as “one serving” could, depending on fine print buried elsewhere on the package, actually contain five servings worth of an intoxicating compound. That kind of labeling, spotted on a real product in a new study, is exactly what researchers are raising alarms about: buyers may have little reliable way of knowing what they’re taking or how much.

Delta-8 tetrahydrocannabinol, commonly called delta-8 THC, is a mildly psychoactive compound derived from hemp. Its rise to retail prominence traces back to a legal gray zone opened by the 2018 Farm Bill, which removed hemp from the federal list of controlled substances. Manufacturers quickly seized on that opening, synthesizing delta-8 THC from hemp-derived CBD and selling it in gas stations, convenience stores, and online shops across the country, often with little oversight. Available in states where traditional marijuana remains fully illegal, these products often operate outside the labeling rules that govern regulated cannabis markets.

That gap is already showing up in emergency data. U.S. Poison Control Centers have handled more than 10,000 cases involving delta-8 THC since 2021, including 2,075 in 2024 alone. Many involved children, with reported effects ranging from hallucinations and loss of consciousness to anxiety and vomiting. A 2023 study found that 11.4% of U.S. 12th-grade students had used delta-8 THC in the past year. Researchers from Johns Hopkins Bloomberg School of Public Health and the University of Waterloo wanted to know what information, and what marketing, these products were actually putting in front of buyers.

Delta-8 THC Edibles Pack Outsized Doses

To find out, researchers collected packaging photos from participants in a large U.S. and Canadian cannabis survey conducted in 2021 and 2022, ultimately analyzing 140 unique products after screening images for authenticity. Gummies and other edibles made up the largest share, followed by vapes, with the rest split among tinctures, dried flower, and a handful of other formats. Most products appeared to originate from the United States.

On the surface, edible products looked reasonably well labeled: the majority stated how many milligrams of intoxicating cannabinoids were in each piece. But the amounts themselves told a different story. Potency ranged from 10 milligrams to 150 milligrams per piece, and most products exceeded 10 milligrams, which is the standard single serving for delta-9 THC in most U.S. jurisdictions with regulated cannabis markets. A buyer grabbing a standard-looking gummy could easily be consuming three, five, or more times a conventional dose without realizing it.

Some products made that problem worse by using labeling that undercut itself. One package stated “Serving Size: One [gummy] Bear = 5 Servings,” with each full piece containing 92.5 milligrams of delta-8 THC and 12.5 milligrams of other cannabinoids. Another directed users to start by “Consum[ing] ½ of one gummy to establish tolerance,” while simultaneously listing one whole piece as a single serving. For most consumers, figuring out an actual safe intake from instructions like those is genuinely difficult.

Vape Labels Left Buyers Guessing

Vape products were murkier still. For nearly 70% of vapes in the sample, researchers could not calculate cannabinoid concentration from the label at all. Packages either listed milligrams without net weight, net weight without milligrams, or used language too ambiguous to distinguish between the two. One cartridge stated “Delta 8 • One Gram” without clarifying whether that gram referred to the liquid’s net weight or the amount of delta-8 THC present. Depending on the correct interpretation, a buyer could be getting a modest dose or an extremely concentrated one from the identical product.

Delta-8 THC Warnings Were Nearly Invisible

Health warnings, where they existed, were mostly buried on the back or sides of packaging. Only 11.7% of front-facing panels displayed any health warning at all. A given product might warn about impaired driving, pregnancy risks, or keeping the item away from children, or it might say nothing on any of those fronts. Fewer than 12% of products included lab testing information on any surface, leaving buyers no practical way to verify what was actually inside.

Cartoon Characters and Candy Lookalikes

While safety information was scarce, youth-friendly marketing was not. More than 43% of products used the word “hemp” in branding or descriptions, a framing researchers say can suggest a product is natural or non-intoxicating when it is neither. About 26% referenced the product’s legal status, often citing the 2018 Farm Bill. More than one in five products featured cartoons or illustrations of people, animals, or fantasy characters. Two were direct lookalikes of well-known candy brands, with one bearing packaging designed to closely resemble Nerds candy, cartoon characters included. Health-adjacent branding, with names evoking medicine or healing, appeared on roughly 13% of products.

Researchers concluded that “the lack of clarity and consistency in cannabinoid content labeling for delta-8 THC products, the absence of health warnings, and the presence of youth-appealing marketing highlight the need for greater regulatory control over delta-8 THC products.” Published in the Journal of Studies on Alcohol and Drugs, the study makes clear that a market built on a regulatory loophole has outpaced the rules meant to keep consumers safe.

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Disclaimer: This article is based on a peer-reviewed study. The findings reflect a sample of 140 delta-8 THC products collected in 2021 and 2022 and may not represent current market conditions. This article is intended for informational purposes only and does not constitute medical or legal advice.

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