Is Weed Illegal in Switzerland? THC Limits, CBD, and Penalties

Is weed illegal in Switzerland? It depends on one number. Cannabis containing 1.0% THC or more is illegal under the Federal Act on Narcotics and Psychotropic Substances, while cannabis products below that threshold — usually sold as CBD — are legal and widely available in shops across the country.¹ Even on the illegal side, Swiss law treats personal use far more leniently than trafficking, and the country is actively running pilot programs that let selected residents buy regulated recreational cannabis legally.

The 1% THC Line

Everything turns on total THC content. At or above 1.0%, cannabis is a narcotic: cultivating, producing, selling, importing, exporting, possessing, or consuming it without authorization is a criminal offense.¹ Below 1.0%, the same plant is an ordinary consumer good, regulated as a tobacco substitute, cosmetic, or food item depending on how it’s sold.²

Switzerland’s 1.0% ceiling is unusually generous. The European Union’s standard limit for hemp-derived products is 0.3%, and several EU member states set it even lower. A CBD flower that’s perfectly legal in a Zurich tobacco shop can be a controlled substance across the border.

Legal CBD Products

Cannabis under 1.0% THC can be produced, sold, and consumed openly. You’ll find CBD flower, oils, and pre-rolled joints in tobacco shops, pharmacies, and dedicated CBD stores. These products aren’t classified as narcotics, so no license is needed to buy them and no prescription is involved.

Regulation follows the use case. CBD flower marketed for smoking sits under the Tobacco Products Law and must carry health warnings in German, French, and Italian. CBD cosmetics follow personal care rules. CBD oils sold as food or supplements face the strictest path: cannabinoids are classified as novel foods and need authorization from the Federal Food Safety and Veterinary Office before they can be sold legally.³

Home growing follows the same rule. You can cultivate cannabis at home without any permit, provided the plants stay below 1.0% THC.⁴ Growing high-THC plants without authorization is a criminal offense, and a medical prescription does not change that: patients cannot grow their own.

Penalties for High-THC Cannabis

Penalties scale with what you’re doing. Growing, producing, selling, transporting, importing, exporting, or possessing high-THC cannabis without authorization carries a maximum of three years in prison or a monetary penalty.¹ Consumption alone is a lesser offense, punishable by a fine rather than prison, and in minor cases authorities can issue just a warning or drop proceedings entirely.

Aggravated offenses carry a mandatory minimum of one year in prison, which can be combined with a monetary penalty. An offense qualifies as aggravated when it involves quantities capable of endangering the health of many people, organized trafficking as part of a group, commercial dealing that generates significant revenue, or supplying narcotics in or near schools and other places primarily used by minors.¹

Small Amounts and Personal Use

Possessing up to 10 grams of cannabis for your own consumption is not a punishable offense under the Narcotics Act.¹ The same rule covers passing a small amount to someone over 18 for free, as long as you consume it together at the same time.

The widely known CHF 100 fixed-penalty fine applies to being caught consuming cannabis, not to simply having a small amount on you. The distinction matters. In 2023, the Federal Court confirmed that police do not have an unconditional right to confiscate cannabis quantities under 10 grams when there is no proof of criminal activity. If you’re caught actually using it, police can both fine you and take the cannabis. The Federal Court has also clarified that the non-punishability of small-amount possession applies equally to minors and adults.⁵

Note the limit: this rule covers personal use of a small amount. Any sign of dealing, growing high-THC plants, or carrying larger quantities takes the situation out of this zone and into the penalties above.

Driving After Any Cannabis Use

Driving is where the legal/illegal split stops helping you. Switzerland enforces zero tolerance for THC behind the wheel, with a detection threshold of 1.5 micrograms per liter of blood. Exceed it and you are driving while unfit under the Road Traffic Act, treated the same as driving with a blood alcohol concentration above 0.8 per mille.

This catches CBD users too. Because legal CBD products can contain up to 1.0% THC, regular use may produce detectable blood levels, and the official government advice is not to drive after consuming any cannabis product.⁴

If police suspect impairment, they can run a saliva screening test on the spot. A positive result leads to a medical examination with blood and urine analysis, and the blood test determines whether you were over the limit. A confirmed positive brings:

Immediate license confiscation on the spot.
License suspension of at least three months, potentially indefinite if a fitness-to-drive investigation is ordered and you fail it.
A fine, a heavier additional fine, or up to three years in prison.
Costs for the medical analysis and any traffic psychology evaluation, typically CHF 1,500 to 2,500.

Taking Cannabis Across the Border

Crossing a Swiss border with cannabis is risky even when the product is legal inside Switzerland. Only cannabis under 1.0% THC can be exported, and the destination country’s own laws have to permit it.⁴ Because most European neighbors set their THC limits at 0.2% or 0.3%, Swiss CBD products are often controlled substances the moment you leave.

Importing or exporting high-THC cannabis without authorization carries the same penalty as domestic trafficking: up to three years in prison or a monetary penalty.¹ Cross-border trade in medical cannabis has been possible since August 2022, but only through a formal Swissmedic authorization process built for pharmaceutical supply chains, not personal travel.⁶

Medical Cannabis

Since August 1, 2022, Swiss doctors can prescribe cannabis-based medicines directly on a narcotics prescription form, without seeking a separate exemption from the Federal Office of Public Health for each patient.⁶ Medical cannabis is now a controlled narcotic subject to standard monitoring, similar to other prescription narcotics like morphine, with Swissmedic overseeing cultivation licenses and inspections.

Cost is the sticking point. No cannabis-based medicine, including Sativex, appears on the Federal Office of Public Health’s list of specialties, which is the roster of drugs covered by compulsory basic health insurance. Patients generally pay out of pocket, and reimbursement is possible only in hardship cases where a doctor files a specific cost-approval request. A 2021 government health technology assessment found the evidence on cannabis for chronic pain and spasticity too inconsistent to justify routine coverage, and the 2022 reform did not change the reimbursement rules.⁷

Pilot Trials for Recreational Use

Switzerland is running government-authorized pilot programs that let selected residents legally buy and consume high-THC cannabis for non-medical use. The Federal Office of Public Health oversees them, and the aim is to gather real-world data on regulated sales versus the black market.⁸

As of early 2025, trials are operating in several cities and cantons, including Zurich, Bern, Basel, Lausanne, Lucerne, Bienne, and the Geneva area, using distribution models that range from pharmacies to cannabis social clubs and dedicated non-profit shops.⁸ Participation is restricted. To join, you must:⁹

Be 18 or older and capable of making your own decisions.
Prove you already consume cannabis — these studies look at regulated access, not first-time use.
Live in the canton where the trial runs.
Sign a written consent form to participate in the scientific study.

Pregnant and breastfeeding women and anyone with a medical condition where cannabis is contraindicated are excluded. Participants get an individual QR code tracking their purchases, face monthly quantity caps, and cannot share their cannabis or use it in publicly accessible places. Violations can lead to exclusion.⁹

Where the Law Is Heading

The pilot trials are designed to inform a wider legalization debate, and that debate has already moved into draft legislation. A proposed federal law would let adults legally grow, buy, possess, and consume cannabis under a tightly regulated regime: cannabis would remain classified as a narcotic, sales would run through a state monopoly with a limited number of licensed retailers, companies would be barred from controlling both cultivation and retail, and home cultivation of up to three female plants would be allowed. The draft also proposes taxing cannabis by THC content and consumption method, with revenue flowing back through health insurance.

An explanatory report and public consultation are expected before any final vote, and the timing of full legalization remains uncertain. For now, the 1.0% THC line is still the one that decides whether what you’re holding is a legal consumer product or a controlled narcotic.

1
Fedlex. Federal Act of 3 October 1951 on Narcotics and Psychotropic Substances (Narcotics Act, NarcA)
2
Swissmedic. Amendments to Narcotics Ordinances on Cannabis for Medical Purposes
3
Federal Food Safety and Veterinary Office (FSVO). Cannabis, Hemp Extracts and Cannabinoids as Foodstuffs
4
ch.ch. Cannabis – What Is the Law in Switzerland?
5
Federal Office of Public Health FOPH. Addiction and Health: Cannabis
6
Swissmedic. Cannabis for Medical Purposes – Visible
7
Federal Office of Public Health FOPH. Limited Medical Use of Banned Narcotics
8
Federal Office of Public Health FOPH. Overview of Authorised Pilot Trials With Cannabis
9
Federal Office of Public Health FOPH. FAQs on Cannabis Pilot Trials