The information available on the internet with regards to the legality of psilocybin in Costa Rica is confusing and contradictory, so govern yourself accordingly. While there is ever increasing use of psilocybin mushrooms in Costa Rica for spiritual purposes, and psychedelic retreats operate openly, they have an uncertain legal status in Costa Rica While enforcement is lack and no one reports being arrested for the possession of psilocybin mushrooms, the Costa Rican list of Controlled Substances, updated in 2020, specifically mentions psilocybin, The UK government warns it citizens that Costa Rican druge enforcement authorities treat drug possession/trafficking severely, with a minimum sentence of eight (8) years imprisonment.