May 25, 2026
⚑ Important
Regulation
MHLW Issues Final CBN Import Guidelines Ahead of June 1 Ban
The Ministry of Health, Labour and Welfare released comprehensive guidance for importers regarding the upcoming CBN prohibition effective June 1, 2026. All CBN-containing products must be removed from Japanese market channels by May 31, with customs requiring additional documentation for any shipments containing trace CBN levels. The ministry emphasized that existing inventory disposal must follow hazardous substance protocols. Import permits for research institutions studying CBN will require enhanced security clearances and quarterly reporting requirements.
May 26, 2026
Market
CBG Product Registrations Surge 340% in Q2 2026
Tokyo Customs data shows cannabigerol (CBG) product import applications increased 340% compared to Q1 2026, with 847 new product registrations submitted. European manufacturers led submissions with 62% market share, followed by US companies at 28%. The surge reflects industry pivot from CBN products ahead of the June prohibition. Import values for CBG isolates reached ¥2.8 billion in May alone, indicating strong retailer confidence in the emerging market segment.
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Japan Customs
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customs.go.jp
May 27, 2026
⚑ Important
Business
Major Retailers Announce CBG-Focused Product Lines
Three of Japan's largest health supplement retailers unveiled CBG-exclusive product ranges launching in June 2026. The coordinated announcements follow months of supply chain preparation as companies transition from CBN offerings. Industry sources indicate wholesale CBG pricing has stabilized at ¥180,000 per kilogram for pharmaceutical-grade isolate. Retailers report consumer education campaigns emphasizing CBG's legal status and differentiation from prohibited cannabinoids have shown positive early response metrics.
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Nikkei Shimbun
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nikkei.com
May 28, 2026
Science
University of Tokyo Publishes CBG Bioavailability Study
Researchers at the University of Tokyo's Graduate School of Medicine published findings on cannabigerol bioavailability in Japanese subjects, showing optimal absorption rates with lipid-based formulations. The peer-reviewed study examined 120 participants over 12 weeks, finding nano-emulsion delivery systems increased bioavailability by 47% compared to standard oil suspensions. Results provide critical data for overseas manufacturers developing Japan-specific CBG formulations under current regulatory frameworks.
May 29, 2026
Regulation
NPA Clarifies CBD Testing Protocols Following Recent Seizures
The National Police Agency issued updated testing protocols for CBD products after customs seized 12 shipments containing THC levels exceeding 0.001% limits since April 2026. New guidelines require third-party Japanese laboratory certification for all hemp-derived cannabinoid imports, with testing reports valid for only 30 days. The agency emphasized that detection limits have improved significantly, making previously undetectable trace THC levels now enforceable violations requiring immediate product recall.