Most companies exporting CBD to Japan believe the country runs a single 1 ppm THC limit. Japan actually runs three, and which one applies depends on your finished product format rather than your ingredient.
Getting this wrong is expensive. Products exceeding the applicable limit are classified as narcotics, which means seizure and destruction at customs rather than a warning or a return shipment.
The Three Limits
Since December 12, 2024, Japan has used an ingredient-based regulatory regime with three residue thresholds:
| Product category | THC limit | Percentage |
|---|---|---|
| Oils (liquid at room temperature) and powders | 10 ppm | 0.001% |
| Other products | 1 ppm | 0.0001% |
| Aqueous solutions | 0.10 ppm | 0.00001% |
That is a hundredfold spread between the loosest and strictest category. The same material, tested once, can be compliant for one product and non-compliant for another.
For international context: Japan’s oil limit is roughly 300 times stricter than the United States federal standard. The beverage limit is roughly 30,000 times stricter.
Why Product Format Decides Which Limit Applies
Japan’s 2024 reform replaced the previous plant-part rule, which permitted CBD only from stems and seeds, with an ingredient-based standard capping THC content in finished products.
The practical consequence is that qualification does not transfer between formats. A manufacturer who qualifies an isolate against the 10 ppm oil threshold and then extends the same ingredient into a beverage line has inherited a limit two orders of magnitude tighter. The ingredient never changed. The applicable rule did.
This is the single most common error we see in Japanese export planning.
MHLW Category Guidance
Japan’s Ministry of Health, Labour and Welfare issued category guidance to clarify which products fall where. In summary:
Subject to the 10 ppm limit: CBD oil, hemp seed oil, cosmetic plant oils, CBD powder, protein powder.
Subject to the 0.10 ppm limit: aqueous solutions and water-based mixtures.
Subject to the 1 ppm limit: most other products, including a broad range of CBD raw materials.
That last category matters for anyone importing bulk ingredient rather than finished product. Industry specialists have noted that the 1 ppm “others” threshold is likely to apply directly to many raw materials.
Grey areas remain. If your product does not fit cleanly into one of these categories, confirm the classification before shipping rather than after.
What This Means for Bulk Ingredient Buyers
A specification stated as “below 1 ppm THC” clears the 10 ppm oil and powder limit with substantial margin, and clears the 1 ppm other-products limit.
It does not automatically demonstrate compliance with the 0.10 ppm aqueous limit.
“Below 1 ppm” and “below 0.10 ppm” are different statements. If you are formulating a beverage for the Japanese market, you need testing sensitive enough to resolve below 0.10 ppm, performed on the finished product rather than the ingredient alone.
We state this plainly about our own material because the alternative is a buyer discovering it at customs. Our ZeroTrace line is verified below 1 ppm by HPLC, which addresses the first two categories. Beverage applications require a deeper conversation about methodology and finished-product testing.
Testing and Documentation Requirements
Japan requires testing from laboratories holding ISO 17025 accreditation, the international standard for testing and calibration laboratories.
At 0.10 ppm, you are operating at the edge of what many laboratories can measure reliably. Accreditation and method documentation are not administrative details in this market — they determine whether your result is defensible when a shipment is inspected.
Importers must provide certificates of manufacture and analysis from accredited laboratories. Shipments found to contain THC above the applicable limit are destroyed.
One further consideration: because THCA converts to active THC under heat, Japan’s standard is effectively zero-tolerance for both compounds.
Frequently Asked Questions
Which THC limit applies to CBD beverages in Japan? The 0.10 ppm aqueous solution limit applies to beverages and water-based mixtures. This is the strictest of Japan’s three categories.
Is CBD legal in Japan? Yes. CBD products are legal provided they meet the applicable THC residue limit for their product category and the material comes from a compliant source with proper documentation.
Does a “THC-free” COA meet Japan’s requirements? Not necessarily. “THC-free” and “non-detect” describe a test result at a particular laboratory’s detection limit. If that detection limit is higher than Japan’s applicable threshold, the COA cannot demonstrate compliance. Always check the stated detection limit against the specific limit for your product format.
What happens if a shipment exceeds the limit? Products exceeding the residue limits are classified as narcotics under Japanese law. Shipments are seized and destroyed, and importers face potential public disclosure, recalls and criminal liability.
Do these limits apply to bulk ingredients or only finished products? The regime applies to products entering Japan. Industry guidance suggests the 1 ppm “others” threshold is likely to apply to many bulk CBD raw materials, though classification should be confirmed for your specific material.
Sources
- Ordinance on the application of the law amending parts of the Cannabis Control Act and the Narcotics and Psychotropics Control Act, effective December 12, 2024
- MHLW Narcotics Control Division category guidance
Exporting cannabinoids to Japan? Tell us your product format and we will identify which threshold applies and what documentation you will need. Contact sales@cannvital.com.
Cannvital is a bulk cannabinoid manufacturer in Las Vegas, Nevada. cGMP certified under 21 CFR Part 117, 210, 211, FDA-registered, Halal, Kosher and USDA hemp certified.