Ketamine is an authorised anaesthetic agent in Sweden and is legally used in standard anaesthesia, emergency medicine and pain medicine under usual medicinal product regulations. In psychiatry, low‑dose ketamine (intravenous or other routes) has been studied and implemented in specialist research settings and some clinical programmes for treatment‑resistant depression and acute suicidal ideation; those uses are generally off‑label (i.e., not an approved licensed psychiatric indication for racemic ketamine) and are managed at the institutional/clinic level. Swedish academic centres (for example Karolinska Institutet and regional psychiatric research groups) have run clinical trials of ketamine for depression, and individual treatment has been provided under study protocols or as clinician‑directed off‑label care where local governance and specialist oversight exist. Public reimbursement for off‑label ketamine psychiatric treatments is not established nationally; funding and availability are determined by region and treating clinic (many ketamine infusion programmes are privately delivered or financed locally). Safety and monitoring requirements (cardiovascular monitoring, observation after dosing) and the narcotics classification (ketamine is narcotic-classified in Sweden) mean access is restricted to controlled clinical settings. For Swedish context and reporting on clinical studies and debate about ketamine psychiatric use, see Swedish medical news and regulator commentary. #.