0.4 mg THC per Container: What That Limit Means for Gummies, Vapes, Drinks and CBD

Last updated: October 11, 2026 · Calculations checked against the amended federal hemp definition. We'll update this page when the FDA publishes its "container" guidance or Congress changes the law.

This guide does the math for each product type. For the full timeline and what else changes, see our federal hemp ban 2026 guide.

What the 0.4 mg THC Limit Actually Says

The rule comes from Section 781 of Public Law 119-37, which rewrites the federal definition of hemp. A "final hemp-derived cannabinoid product" stops counting as hemp if it contains greater than 0.4 milligrams combined total per container of:

• Total THC, which the statute says includes THCA, and
• Any other cannabinoids with similar effects to THC, or marketed as having similar effects.

Three parts of that sentence decide everything:

1. "Per container," not per serving. The whole package counts. A product with tiny servings can still fail if the package holds many of them.
2. "Combined total." Delta-9, THCA and other THC-like cannabinoids are added together. You can't split THC across several cannabinoids to stay under.
3. "Final" products. This cap is for finished retail products. Ingredients still in production ("intermediate" products) have a separate limit of 0.3% total THC by weight, and intermediates sold straight to consumers don't count as hemp at all.

What Counts as a "Container" Under the 0.4 mg Rule

The law defines a container as the innermost wrapping, packaging or vessel in direct contact with the product that it's sold to consumers in. The statute's own examples are a jar, bottle, bag, box, packet, can, carton or cartridge. Bulk shipping boxes and outer wrappings that aren't essential for retail sale are excluded.

So for most products, the container is exactly what you'd expect: the gummy jar, the drink can, the tincture bottle, the vape cartridge.

One open question is individually wrapped items. Because the definition points to the innermost wrapping, some in the industry have asked whether each wrapped piece could count as its own container. Congress told the FDA to give "additional information and specificity" on the term by February 2026, and as of late September 2026 it had not. Until it does, nobody can say for certain how multi-packs of wrapped items will be treated.

0.4 mg THC per Container: The Math by Product Type

These are illustrative examples using common product sizes, not specific brands. "Times over" divides each product's total THC by the 0.4 mg cap.

THCA figures use the standard total THC formula: delta-9 THC + (0.877 × THCA). The 0.877 factor accounts for the weight THCA loses when it converts to THC. Our THCA guide explains that conversion in more detail.

What the 0.4 mg Limit Means for Gummies

Gummies are hit hardest, because packs hold many servings. To stay under the cap, a 10-piece jar could hold only 0.04 mg of THC per gummy. That is less than one-sixtieth of a 2.5 mg gummy, a dose many brands sell as low-dose.

Mixing in other cannabinoids doesn't help. THCP, THCh and similar THC-like compounds count toward the same combined 0.4 mg. Converted Delta-8 is excluded from the hemp definition separately, whatever the milligrams.

What the 0.4 mg Limit Means for Vapes and Cartridges

The statute names "cartridge" as a container, so each cart or disposable is measured on its own. THC vape oil is typically concentrated distillate or live resin, so a single 1 g cartridge holds hundreds of milligrams of THC. There is no realistic way for a THC or THCA vape to land under 0.4 mg. A THC-free CBD vape could, if its lab report confirms it.

What the 0.4 mg Limit Means for THC Drinks

Each can or bottle is its own container. Hemp THC drinks are commonly sold at 5 or 10 mg per can, which puts them 12.5 to 25 times over. A can would need less than half a milligram of THC to qualify, well below the doses these drinks are sold for.

What the 0.4 mg Limit Means for CBD Tinctures and Topicals

This is where the per-container rule surprises people. A full-spectrum CBD product can meet today's 0.3% delta-9 THC standard and still fail the new cap. Trace THC adds up across a full bottle or jar.

For a 30-serving tincture to qualify, each serving could hold only about 0.013 mg of THC. That's why CBD isolate and broad-spectrum CBD with no detectable THC are the products most likely to make it. The cap applies to topicals too, since the law covers products applied to the skin. Browse our CBD topicals and check each lab report for THC.

How the 0.4 mg Cap Compares to Other THC Limits

The 0.4 mg figure is far stricter than other limits that regulators and lawmakers have used or proposed:

The Medicare pilot shows the tension: its own per-serving limit is above what the new hemp definition allows for an entire package. In June 2026, the White House budget office also asked Congress to update the definition so full-spectrum CBD products stay available. As of October 12, 2026, Congress hasn't changed the 0.4 mg cap.

How to Check a Product Against the 0.4 mg Limit

1. Find total THC on the lab report. If only delta-9 is listed, add 0.877 × THCA.
2. Convert to the whole package. Multiply mg per serving by servings, or mg per gram by the product's weight in grams.
3. Add other THC-like cannabinoids. THCP, THCh, THCV and similar compounds go into the same total.
4. Compare to 0.4 mg. Anything above it won't meet the new federal definition. For the categories most likely to pass, see what hemp products will still be legal after the ban.

0.4 mg THC per Container FAQs

1. Is the 0.4 mg THC limit per serving or per container?

Per container. The law caps a finished hemp product at 0.4 mg of total THC and THC-like cannabinoids for the whole package, such as the jar, bottle, can or cartridge. A 10-gummy jar could hold only 0.04 mg of THC per gummy to qualify.

2. When does the 0.4 mg THC per container rule take effect?

December 11, 2026, unless Congress changes the law first. It was originally set for November 12, 2026, but a stopgap funding law signed September 2, 2026 delayed most of the new hemp definition by about a month.

3. Does THCA count toward the 0.4 mg limit?

Yes. The statute expressly includes THCA in total THC. Labs calculate total THC as delta-9 THC plus 0.877 times THCA, so a 1 g pre-roll at 20% THCA holds about 175 mg of total THC, roughly 440 times the cap.

4. Is a single 2.5 mg THC gummy under the limit?

No. A single 2.5 mg gummy is about six times the 0.4 mg cap, even if it were sold alone in its own wrapper. To qualify, the entire package would need to hold no more than 0.4 mg of total THC and similar cannabinoids.

5. What counts as a container under the hemp law?

The innermost wrapping, packaging or vessel in direct contact with the product as sold to consumers, such as a jar, bottle, bag, packet, can or cartridge. Outer shipping boxes don't count. The FDA was told to add more detail but hadn't as of late September 2026.

6. Does the 0.4 mg limit apply to CBD products?

Yes. Any finished hemp cannabinoid product, including CBD tinctures, gummies and topicals, must hold no more than 0.4 mg of total THC per container. CBD itself doesn't count toward the cap, so THC-free CBD can qualify, while many full-spectrum products would not.

7. Do other cannabinoids like THCP count toward the 0.4 mg?

Yes, if they have THC-like effects or are marketed that way. The cap is a combined total of total THC plus those cannabinoids. The FDA's official list hasn't been published yet, but because THCP is a THC-class compound, it is likely to count either way.

8. Does the 0.4 mg THC limit apply in North Carolina?

Yes. The federal hemp definition applies nationwide from December 11, 2026, including in North Carolina. NC's HB 328, which passed the state Senate in July 2026, would also write the 0.4 mg per-container limit into state law if the House passes it after the November election.