Is CBD Legal in Japan?

CBD is legal in Japan but governed by what MHLW calls the strictest THC residue standard in the world. Effective December 12, 2024, Japan abandoned its old plant-part rule (which only permitted CBD from stems and seeds) and moved to an ingredient-based regime capping THC content in finished products. MHLW limits are 10 ppm (0.001%) for oils and powders, 1 ppm for edibles and cosmetics, and 0.10 ppm for aqueous solutions. Anything above these thresholds is reclassified as a narcotic and triggers seizure, destruction, and criminal liability.

The standard is effectively zero tolerance for both THC and THCA, since THCA converts to active THC under heat. Importers must present a Certificate of Manufacture and a Component Analysis Report from a certified lab proving compliance. CBD products may be sold as cosmetics, supplements, or foods, but cannot make medical claims. Phase 2 of the reform, effective March 1, 2025, added licensing and mandatory testing protocols, and 2025 saw heightened border and retail inspections.