Delta-9 Hemp Products: Why Hemp Gummies Can Contain THC

"Delta-9 hemp" gummies and drinks are sold in many places that do not sell marijuana, and the word "hemp" can make them sound mild. Here we explain what the THC in them is, why the law has counted them as hemp, what changes, and what research shows. We do not name products, and nothing here is advice on how much to take.

At a glance

What is delta-9 hemp?

Delta-9 THC (delta-9 tetrahydrocannabinol) is the main intoxicating substance in cannabis (Weigel 2026). It is one specific chemical compound; the prescription medicine dronabinol, for example, is delta-9 THC made in a lab (FDA 2017).

The 2018 Farm Bill defined hemp as the plant Cannabis sativa L. and anything made from it with no more than 0.3% delta-9 THC by dry weight; that definition applies until December 11, 2026, unless Congress delays the change again (2018 Farm Bill; Pub. L. 119-103). The same 2018 law removed hemp from the federal definition of marijuana and exempted "tetrahydrocannabinols in hemp" from Schedule I; it did not create a different substance (2018 Farm Bill). So "delta-9 hemp" describes where the THC legally comes from, not a milder kind of THC. Researchers testing these products measured the same compound, and in one analysis about a quarter of "hemp" products (13 of the 49 that could be checked) appeared to use delta-9 THC sourced from marijuana-type cannabis (Johnson 2023). Background: hemp vs. marijuana and THC vs. CBD.

Products are not always chemically identical to marijuana edibles, though: 24 of those 49 products (49%) appeared to use delta-9 THC converted from CBD. That conversion can leave by-products such as delta-8 THC and delta-8-iso-THC, and the ratio between two forms of delta-9 THC (trans and cis) differs with where the THC came from (Johnson 2023). The DEA considers THC produced through chemical conversion to be synthetic, even when made from hemp (DEA 2026). Two federal appeals courts took a different view under the 2018 definition (CRS Legal Sidebar 2026).

Source type: an FDA drug label, federal statute and a DEA final rule (final), plus one peer-reviewed product analysis and a Congressional Research Service legal analysis.

Why a gummy can count as hemp under the 2018 rule

The 2018 Farm Bill set the limit as "a delta-9 tetrahydrocannabinol concentration of not more than 0.3 percent on a dry weight basis" (2018 Farm Bill). Under the 2018 definition, which applies until December 11, 2026, unless Congress delays the change again, that is a share of the product's weight, with no limit on the overall amount (Johnson 2023). The arithmetic, as an example only:

• A 5-gram gummy × 0.3% = 0.015 g = 15 mg of delta-9 THC.
• A 10-gram gummy × 0.3% = 0.03 g = 30 mg, the example the researchers themselves used (Johnson 2023).

These figures are approximate (the law measures dry weight), but the heavier the product, the more milligrams the same percentage allows.

In practice, products in that analysis advertised 0.5 to 40 mg per serving (12.98 mg on average); the highest measured was 36.68 mg per serving. Yet 96.2% were under the 0.3% limit. The authors note that marijuana edibles in states like California and Colorado tend to contain 5 or 10 mg per serving (Johnson 2023).

Strength of evidence: the percentage rule is statute (final); the product figures come from one analysis of 53 products, funded by a CBD consumer website (low).

What changes: 0.4 mg per container

Public Law 119-37 (November 12, 2025) rewrites the definition of hemp. It excludes final hemp-derived cannabinoid products with "greater than 0.4 milligrams combined total per container" of total THC (including THCA) and other cannabinoids with similar effects (Pub. L. 119-37).

The law defines "container" as "the innermost wrapping, packaging, or vessel in direct contact with a final hemp-derived cannabinoid product in which the final hemp-derived cannabinoid product is enclosed for retail sale to consumers, such as a jar, bottle, bag, box, packet, can, carton, or cartridge." Bulk shipping containers and outer wrappings not essential for the final retail sale to the consumer are excluded (Pub. L. 119-37).

So the limit covers the whole container, not one gummy: one 5-gram gummy at 0.3% (15 mg) holds more than 37 times 0.4 mg, and a jar of 20 gummies could hold only 0.02 mg per gummy. The law also excludes cannabinoids "synthesized or manufactured outside the plant" and counts THCA toward the 0.3% limit (Pub. L. 119-37); see what is THCA?

When: From November 12, 2026, only the rule on cannabinoids the plant cannot produce naturally applies. Starting December 11, 2026, unless Congress delays it again, the rest takes effect, including the 0.4 mg per container limit (Pub. L. 119-103). Bills to delay or repeal the change have been introduced (CRS 2026). The law asked the FDA for more detail on "container" within 90 days; as of October 28, 2026, the Congressional Research Service (CRS) reported that the FDA had not published it (CRS 2026). Full timeline: federal hemp THC ban.

Source type: federal statutes (final; Congress can still change the December 11 date) and a CRS legal analysis.

Why THC gummies take so long to work

Swallowed THC is absorbed slowly: peak blood levels come about 1–2 hours after eating, compared with 5–10 minutes when smoked, and the intoxication lasts longer (CDC 2015). The liver also breaks down much of it before it reaches the rest of the body (FDA 2017).

• Drug label: for oral delta-9 THC (dronabinol), onset at about 0.5–1 hour, peak at 2–4 hours, psychoactive effects for 4–6 hours (FDA 2017).
• 17 healthy adults who had not used cannabis for at least 60 days: brownies with 10, 25 or 50 mg of THC (study doses) had no effect for 30–60 minutes; effects peaked at 1.5–3 hours. The 25 and 50 mg doses markedly impaired thinking and coordination (Schlienz 2020).
• 6 adults per dose: effects peaked at 1.5–3 hours and lasted 6–8 hours (Vandrey 2017).

Because of the delay, people may take more before the first serving starts working. The CDC described a 2014 Colorado case: a 19-year-old felt nothing 30–60 minutes after eating a piece of a marijuana cookie (labeled 65 mg THC in 6.5 servings) and ate the rest; about 3.5 hours after the first bite he jumped from a balcony and died, with marijuana intoxication a chief contributing factor (CDC 2015).

Strength of evidence: moderate. A drug label and two small controlled studies from one research group, in healthy adults, agree on the timing; single doses only.

Children and poison centers

• 2017–2021: 7,043 edible cannabis exposures in children under 6, rising from 207 in 2017 to 3,054 in 2021; 22.7% of the children were admitted to the hospital (Tweet 2023).
• 2023–2024: in children 5 and under, 9,667 exposures to edibles reported to contain delta-9 THC and 2,169 to edibles with other hemp-derived cannabinoids such as delta-8; critical care admission rates were 8.58% and 11.3%, and no deaths were reported (Weigel 2026).

Neither study reports hemp-derived delta-9 edibles separately, so we could not find numbers for them alone.

Strength of evidence: low to moderate. Poison center records show that young children can become seriously ill; they cannot show how common this is overall.

Is what's on the label inside?

In the analysis of 53 hemp delta-9 products (38 of them gummies), 66.0% were more than 10% off their stated THC amount (usually containing less than advertised), 71.1% of the lab reports offered did not check for impurities, and only 15.1% required any age verification before an order (Johnson 2023). Two authors work for the CBD consumer website that funded it (Johnson 2023). We did not find a second peer-reviewed analysis focused on these products. See our label reading guide.

Strength of evidence: low. One analysis, one laboratory.

Drug tests

Workplace urine tests look mainly for THC-COOH, a breakdown product of delta-9 THC. In 21 adults who rarely used cannabis, brownies with 10 or 25 mg of THC gave a positive result under federal workplace criteria within 8 hours in 97.6% of sessions (Sholler 2022). In 60 adults taking an oil with 100 mg of CBD and 0 to 3.7 mg of delta-9 THC twice a day for two weeks, at least one person in every THC group tested positive, and one sample in the CBD-only group did too. The authors concluded that conventional tests cannot reliably tell legal hemp products from illicit cannabis (Wolinsky 2026); one co-author works for a CBD company. Details: drug tests.

Strength of evidence: moderate. Controlled studies with small groups; results depend on amount, frequency and test cutoffs.

States: four approaches

• California (THC banned in hemp food and drinks): since January 1, 2026, hemp extract in food, drinks or supplements cannot contain THC; state rules also set age 21 and five servings per package (CDPH 2026). California
• Minnesota (per-serving cap): up to 5 mg of delta-9 THC per serving, or 10 mg per drink container (Minn. Stat. § 342.01), sold by licensed retailers to people 21 and older (Minn. Stat. § 342.46). Minnesota
• Washington (cannabis stores only): since 2023, only licensed cannabis retailers may sell products with any detectable THC, including hemp-derived THC (WSLCB). Washington
• Maryland (low caps outside cannabis stores): without a cannabis license, no one may sell a product with more than 0.5 mg of THC per serving or 2.5 mg per package, THC counted "regardless of how derived," with a narrow exception for certain tinctures (Md. Code § 36-1102). Maryland

Rules change often; our state pages are dated (not legal advice).

When to talk to a doctor or pharmacist

• If a child eats a THC gummy, contact a poison center or emergency services right away, even if the child seems fine, and keep the package.
• If chest pain, a racing heart, severe anxiety or confusion follow a THC product, seek medical care; effects can build for hours (Schlienz 2020).
• If you take medicines, are pregnant or have a heart or mental health condition, ask a doctor or pharmacist first. See also our drug interactions tool.

Frequently asked questions

References