Germany’s New Psychoactive Substances Act, known in German as the Neue-psychoaktive-Stoffe-Gesetz or NpSG, has regulated entire chemical families of designer drugs since it took effect on November 26, 2016. Instead of banning substances one at a time, the law defines broad chemical blueprints so newly invented variants are covered automatically. Trafficking and manufacturing carry up to three years in prison in standard cases and up to ten years when aggravating factors apply. Personal possession is deliberately left outside the criminal penalty structure.
Why the Law Regulates Chemical Families Instead of Individual Drugs
Before the NpSG, German authorities had to schedule each new compound individually under the Federal Narcotics Act (Betäubungsmittelgesetz, or BtMG). Chemists could alter a single atom on a banned molecule, market the result as a “legal high,” and sell it openly until regulators caught up. That cycle repeated hundreds of times.
The NpSG breaks it by describing the core chemical skeleton of each drug family and declaring that anything built on that skeleton is regulated regardless of what side chains or substitutions a chemist attaches. A compound can be illegal the moment it is synthesized, with no waiting period for identification, testing, and individual listing. The trade-off is complexity: the annexes read like organic chemistry textbooks, specifying molecular weight caps, permitted core structures, and the positions where substitutions still trigger coverage.
Which Substance Groups Are Covered
Annex 1 of the NpSG defines five chemical families. Each entry sets out a base structure, allowable molecular weight, and the specific positions where modifications still fall within the definition.1Bundesministerium für Gesundheit. New Psychoactive Substances Act – English Translation
- Phenethylamine derivatives built on the 2-phenylethan-1-amine backbone, including cathinone-based structures. Many produce amphetamine-like or empathogenic effects. The molecular weight cap is 500 unified atomic mass units.
- Cannabimimetics, or synthetic cannabinoids, split into two subgroups. One covers modular compounds built from indole, pyrazole, and 4-quinolone cores connected via a linker to a side chain. The other covers compounds derived from 3-sulfonylamido benzoic acid. Both act on the same brain receptors as THC.
- Benzodiazepines, including 1,4- and 1,5-benzodiazepines and their triazolo and imidazolo derivatives, with a weight cap of 600 unified atomic mass units. Effects resemble those of prescription benzodiazepines.
- N-(2-aminocyclohexyl)amide derivatives, built on a cyclohexylamine backbone and producing dissociative effects. The family captures many substances otherwise described as arylcyclohexylamines.
- Tryptamine derivatives, divided into indole-3-alkylamines and ergolene derivatives. The law explicitly excludes naturally occurring neurotransmitters like serotonin and melatonin and their active metabolites.
Annex 2 handles individual substances that do not fit cleanly into any of the five groups but still meet the psychoactive criteria. The two-track system casts a wide net through chemical families while keeping the ability to target outlier compounds one by one.
What the Law Prohibits
Section 3 bans a broad range of conduct. For Annex 1 substances, every link in the supply chain is prohibited: trading, putting into circulation, manufacturing, importing, exporting, transiting through Germany, acquiring, possessing, and administering a substance to another person.1Bundesministerium für Gesundheit. New Psychoactive Substances Act – English Translation
For Annex 2 substances, the prohibitions are narrower and depend on the method of sale. Trading by mail order or through vending machines is specifically banned, as is supplying these substances to anyone under 18. Minors themselves are prohibited from acquiring or possessing Annex 2 substances.
Personal Possession Is Not a Crime
This is where the NpSG breaks sharply from how most people assume drug laws work. Section 3 technically prohibits possession, but the criminal penalties in Section 4 apply only to trafficking, putting substances into circulation, administering them to others, and manufacturing or importing for distribution. Acquiring or possessing a new psychoactive substance for personal use is not a criminal offense under the Act.
That was a deliberate legislative choice. The reasoning is that criminalizing users drives consumption underground without reducing demand, while concentrating penalties on the supply side disrupts the market more effectively.
In practice the distinction is muddier. Police who find an unknown substance in someone’s possession usually cannot tell on the spot whether it falls under the NpSG or the stricter BtMG, which does criminalize personal possession. Standard procedure is to seize the substance, send it to a lab, and open an investigation on the assumption that the harsher law applies. Users have reported that the experience feels indistinguishable from a BtMG arrest until lab results come back.2National Center for Biotechnology Information. Taking the Cat-and-Mouse Game to the Next Level
Even once the substance is confirmed as NpSG-regulated rather than BtMG-scheduled, authorities can still seize and destroy it under federal and state police laws. So personal possession will not land you in criminal court, but you will lose the substance and may sit through a temporary investigation before the matter is dropped.
Penalties for Trafficking and Manufacturing
Section 4 sets out a tiered penalty structure that escalates with the seriousness of the conduct.
- Standard offenses. Trafficking, putting substances into circulation, administering them to others, or manufacturing and importing for distribution carry up to three years of imprisonment or a fine. Attempts are also punishable.
- Aggravated offenses, one to ten years. The range rises sharply when the offender operates commercially, acts as part of an organized group, or is over 21 and supplies a substance to someone under 18 for immediate consumption. The same elevated range applies when the offense endangers the health of a large number of people, endangers another person’s life, or risks serious bodily injury.
- Less serious aggravated cases. Where an aggravated offense sits at the lower end of severity, the court may impose three months to five years.
- Negligent offenses. Negligent trafficking or administration carries up to one year or a fine. Negligent conduct in otherwise aggravated circumstances carries up to three years or a fine.
When the statute mentions “a fine,” it refers to Germany’s day-fine system. Courts set both the number of daily units, reflecting the severity of the offense, and the daily rate, reflecting the offender’s income. The NpSG itself does not write in a fixed euro range.
Exemptions for Science, Industry, and Official Use
Section 3’s prohibitions do not apply in three situations. Substances may be used for commercial, industrial, or scientific purposes when those uses are recognized as consistent with the current state of science and technology. Federal and state government agencies may handle these substances for official duties, including agencies they designate to investigate new psychoactive substances. And certain Annex 2 substances are exempt when they exist in a form that makes extraction of the psychoactive compound impractical.
These carve-outs keep the law from interfering with legitimate pharmaceutical research, forensic laboratory work, and industrial chemistry. They are narrow by design. The substance has to serve a genuine purpose unrelated to its psychoactive effects on humans, and the use has to meet accepted scientific or technical standards.
How the NpSG Fits Alongside the Federal Narcotics Act
The NpSG does not replace the BtMG. The two laws operate side by side, each covering different territory. When a substance is individually listed in the BtMG’s annexes, the BtMG governs and the NpSG does not apply. The NpSG only reaches substances that are not already scheduled under the BtMG or classified as medicinal products under the Medicines Act (Arzneimittelgesetz).2National Center for Biotechnology Information. Taking the Cat-and-Mouse Game to the Next Level
Particularly dangerous new psychoactive substances continue to be added individually to the BtMG annexes, and the move carries practical consequences. The BtMG imposes steeper penalties: up to five years for standard offenses and up to fifteen years in aggravated cases. It also criminalizes personal possession. When regulators shift a substance from NpSG coverage into the BtMG, the legal stakes for everyone involved rise substantially.
What the Law Has and Hasn’t Changed
The NpSG has not ended the designer drug problem so much as changed its shape. Research involving interviews with users, addiction counselors, and law enforcement found that the law’s introduction was accompanied by shifts in the market rather than its collapse. Novel substances began appearing that were designed to fall outside the defined chemical groups, and the composition of products on the street became less predictable as manufacturers reformulated.
Most stakeholders in that research described the situation as a continuation of the same cat-and-mouse game at a higher level of complexity. Addiction counselors said the unpredictability of reformulated products created new health risks, because users could no longer reliably gauge what they were taking or in what dose. Law enforcement acknowledged that the NpSG gave them a tool they previously lacked, while sorting NpSG substances from BtMG substances in the field remained a persistent operational problem.
Harm-reduction advocates welcomed the non-criminalization of personal possession, but its practical effect has been limited. Because officers default to assuming BtMG jurisdiction until a lab proves otherwise, users still experience seizures, investigations, and the stress of possible prosecution during the weeks or months it takes for analysis to come back. The law on paper and the law on the street look quite different.