As over-the-counter (OTC) drug overdose ("OD") spreads among young people in Japan, the amended Pharmaceuticals Act took effect on May 1, 2026, creating a new legal category — Designated Abuse-Prevention Drugs. This article covers the eight covered substances, under-18 sales restrictions, pharmacist verification duties, and administrative sanctions.
Background: OTC Overdose as a Social Problem
In recent years, "market drug OD" — taking cold medicines, antitussives, and sleep aids in massive overdose — has spread on SNS, especially among teens, leading to consciousness disturbance, seizures, and hallucinations. Following 2024 enforcement guidance and the 2025 amendment of the Pharmaceuticals Act, the new system began on May 1, 2026.
What Are Designated Abuse-Prevention Drugs?
Previously soft administrative guidance, "drugs with potential for abuse" are now upgraded to a statutory category with binding sales restrictions and administrative sanctions for violations.
| Item | Before | After |
|---|---|---|
| Status | Administrative guidance | Statutory category |
| Sales limits | Effort obligation | Mandatory (sanctions for breach) |
| Substances | 6 | 8 (2 new) |
| Under-18 limit | Effort obligation | Statutory: one pack only |
| Verification | Recommended | Mandatory |
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Try for free →The Eight Substances
Previous six: ephedrine, codeine, dihydrocodeine, bromovaleryl urea, pseudoephedrine, methylephedrine.
Newly added in 2026: - Dextromethorphan — antitussive; overdose causes confusion, agitation, hallucinations - Diphenhydramine — antihistamine / sleep aid; overdose causes consciousness disorders, delirium, seizures
These are widely contained in OTC cold medicines, antitussives, sleep aids, and allergy drugs.
Restrictions on Buyers Under 18
- One small pack only
- Large-volume packs prohibited
- No multi-unit (2+) sales
- Face-to-face or video-call sale by a pharmacist or registered seller (online sales subject to additional requirements)
Pre-sale verification: - Age check (student ID etc.) - Confirmation that the buyer is the user - Reason for purchase - Whether the buyer has purchased at other stores
Verification Duties for All Customers
For 1-pack purchases: confirm the buyer is the user; explain proper use.
For multi-pack or large-volume purchases: detailed reason check; cross-store / cross-product duplication check; recordkeeping; refusal of sale is an available option.
Online Sales Rules
Online sales remain permitted with additional requirements: - Pharmacist / registered seller verification at order (chat / video call) - Under-18 documentation - Quantity controls to prevent excess to a single buyer - Confirmation of multiple orders to the same address
Administrative Sanctions for Violations
- Business improvement order (Article 72-4)
- Business suspension order
- Revocation of pharmacy / drug-store licence
- Criminal sanctions for severe cases
Past violations have resulted in 30 to 180-day business suspensions, with major operational impact.
Notes for Consumers
- ID check and reason explanation may be required
- Multiple-unit purchases are not normally allowed
- For under-18 buyers: parental accompaniment recommended; online purchase requires parental account / age verification
If overdose is suspected, free consultation is available 24/7 via Yorisoi Hotline (0120-279-338) and other mental health resources.
Legal Responsibility
Pharmacy chains: managing pharmacists supervise; HQ training duty; corrective plan for violating stores.
Individual pharmacists / registered sellers: failure to perform verification duties can lead to disciplinary action under the Pharmacists Act and registered-seller rules; severe violations may result in suspension or revocation of qualification.
International Comparison
| Country | Substances | Under-18 limit |
|---|---|---|
| US | Pseudoephedrine etc. (meth precursors) | Varies by state |
| UK | Paracetamol (quantity limits) | Up to 2 packs under 16 |
| South Korea | OTC volume limits | Minors require guardian |
| Japan | 8 substances | One pack only |
Japan is now closer to international standards on youth-focused OD prevention.
Related Criminal Liability
Overdose itself is not a crime, but related conduct can trigger liability: - Transferring drugs to minors (Pharmaceuticals Act) - Buying with false / others' identities for OD use (private document forgery + Pharmaceuticals Act) - Accidents resulting from OD (negligent driving / Road Traffic Act violations) - Inciting OD methods on SNS (suicide complicity / defamation)
Healthcare Response
Hospitals receiving overdose patients must provide life-saving treatment (activated charcoal, dialysis), psychiatric referral when suicide risk is present, child-welfare reporting for minors needing protection, and coordination with public health nurses and school counselors.
Conclusion
The May 2026 launch of the Designated Abuse-Prevention Drugs system is Japan's serious legal response to youth OTC overdose. Coverage expanded to 8 substances, one-pack limit for under-18s, and mandatory pharmacy verification reshape how OTC medicines are obtained.
Consumers must accept ID checks and reason explanations; pharmacy operators must overhaul SOPs and staff training. Parents and educators should learn the warning signs and connect children with expert help early.
For criminal cases, medical incidents, or administrative-sanction defense related to this regime, consult a lawyer experienced in pharmaceutical regulation.
