Ketamine is a registered anesthetic and medical drug in Costa Rica and is used within conventional medical practice (anesthesia, emergency medicine) and increasingly in private psychiatric/infusion-clinic settings for off‑label treatment of depression, PTSD and other indications. Costa Rica's forensic and judicial services list ketamine among substances they identify in seized materials and medical settings, confirming its regulated status as a controlled medicine when used medically. #.
In practice: private clinics and international medical‑tourism providers advertise ketamine infusion therapy and ketamine-assisted programs in Costa Rica; these programs operate predominantly in the private sector (out‑of‑pocket payment) rather than as a covered benefit under universal public reimbursement. Multiple clinic directories and industry reports describe IV/IM/sublingual ketamine services offered to domestic and international patients; such treatments are typically prescribed and administered by licensed physicians but are not part of a nationally standardized, publicly reimbursed mental‑health pathway. #, #.
Regulatory nuance: while ketamine itself is medically authorized and available through licensed health professionals, structured reimbursement for ketamine as an antidepressant (off‑label) is not documented as a routine benefit of the Caja Costarricense de Seguro Social; payments for ketamine‑infusion therapy in Costa Rica are therefore commonly private/self‑pay or part of private insurance arrangements when accepted by insurers.