AR Psilocybin law · Americas · Reviewed Nov 12, 2026
Psilocybin mushrooms are generally prohibited in Argentina as of November 2026, although a Supreme Court ruling limits punishment in some private-use cases.
Law 23.737 criminalizes possession for personal use. In 2009, the Supreme Court’s Arriola ruling held that punishing private possession that does not harm others is unconstitutional, but the supplied sources say it is applied case by case and does not create blanket immunity.
The supplied sources describe sale, cultivation, and possession of psilocybin mushrooms as prohibited, and report prosecutions and seizures. They do not establish a separate legal exemption for spores, grow kits, or truffles.
The supplied sources describe no routine legal patient-access or therapy pathway for psilocybin. One 2026 report says scientific research may be authorized with ethics-committee approval; the Misiones fungal research program approved in 2025 is specifically reported not to involve psilocybin mushrooms.
The sources do not describe a legal retail or retreat market; they report enforcement actions and unauthorized activity. A 2025 report also notes that cultivation and consumption tutorials circulate online, but does not present them as lawful.
The Supreme Court’s Arriola ruling held that punishment for private personal-use possession that does not affect others is unconstitutional; later sources describe its application as case by case.
Decree 560/2019 included psilocybin in the controlled-substance framework, according to the supplied sources.
Misiones approved a provincial program for research and development involving medicinal fungi, but a supplied report says the program does not work with psilocybin mushrooms.
A supplied legal-register source says Decree 122/2026 updated the controlled-substance list and that Law 23.737 still criminalizes possession, with Arriola applied case by case.
Number of countries in each category. Argentina’s category is highlighted.
Access score from 0 (illegal) to 5 (legal or openly sold).
Browse cities across Argentina and see the nearest listings on the map.
Listings describe themselves; Pscilly does not sell psilocybin, and sellers without a government licence are labeled “not licensed.”
Psilocybin mushrooms are generally prohibited in Argentina as of November 2026, although a Supreme Court ruling limits punishment in some private-use cases.
Law 23.737 criminalizes possession for personal use. In 2009, the Supreme Court’s Arriola ruling held that punishing private possession that does not harm others is unconstitutional, but the supplied sources say it is applied case by case and does not create blanket immunity.
The supplied sources describe sale, cultivation, and possession of psilocybin mushrooms as prohibited, and report prosecutions and seizures. They do not establish a separate legal exemption for spores, grow kits, or truffles.
The supplied sources describe no routine legal patient-access or therapy pathway for psilocybin. One 2026 report says scientific research may be authorized with ethics-committee approval; the Misiones fungal research program approved in 2025 is specifically reported not to involve psilocybin mushrooms.
The sources do not describe a legal retail or retreat market; they report enforcement actions and unauthorized activity. A 2025 report also notes that cultivation and consumption tutorials circulate online, but does not present them as lawful.
Pscilly classifies Argentina as: illegal. Laws change often, so check the linked sources and current local rules.
Educational summary, not legal advice. Pscilly reviewed these laws on November 12, 2026 using the sources listed; laws and enforcement change often, so confirm current rules with local authorities or a lawyer before you travel. Never carry psilocybin across a border.
Pscilly is a mushroom directory and marketplace for the U.S., Canada, Europe and beyond, covering mushroom shops, licensed psilocybin centers, smart shops, retreats, mushroom brands, delivery services, events and deals. Listings come from the businesses themselves and from public sources, and every listing links to the business.