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How Has Japan's Cannabis Control Act Been Amended?
Yuji Masataka1,2,3,4, Yoshiyuki Akahoshi3,5, Munenori Katayama6
1Department of Neurology, Kumamoto Seijo Hospital, Kumamoto, Japan.
Cannabis and Cannabinoid Research
|June 9, 2025
Summary
Japan
Area of Science:
- Legal and Social Sciences
- Pharmacology
- Regulatory Affairs
Background:
- Japan's Cannabis Control Act, established in 1948, has been significantly revised for the first time in 2023.
- Previous legislation maintained a rigid framework, restricting cannabis for medical and industrial purposes.
Purpose of the Study:
- To analyze the content and implications of Japan's 2023 cannabis law amendments.
- To assess changes in medical applications, industrial use, and drug control policies.
Main Methods:
- Review of governmental documents and legislative records.
- Analysis of secondary sources on regulatory shifts.
- Focus on three key domains: medical, industrial, and drug control.
Main Results:
- Cannabis-derived medical products may be prescribed by physicians under a new regulatory framework.
- Industrial use restrictions on cannabis (excluding mature stalks and seeds) have been lifted.
- Stricter THC thresholds and new penalties for cannabis use have been implemented, alongside its continued regulation as an illicit substance.
Conclusions:
- The 2023 amendment marks a major policy shift in Japan, balancing new cannabis opportunities with drug control.
- The practical impact of these changes requires ongoing observation and monitoring.
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