Study	Reason for exclusion
Cocito 1970	Allocation: randomised. Participants: people with psychosis in hospital, not acutely ill.
Fang 2014	Allocation: no information regarding randomisation. Interventions: no mention of droperidol.
Foster 1995	Allocation: randomised. Participants: healthy women attending day hospital for minor surgery.
Girard 1972	Allocation: not randomised, case‐control study.
Hooper 1983	Allocation: unclear; Dr Hooper kindly responded to email ‐ allocation was quasi‐randomised, "every other patient".
Hu 2014	Allocation: quasi‐randomised.
Isbister 2010	Allocation: randomised. Participants: people with violent and acute behavioural disturbance. No mention of any underlying psychiatric illness.
Lilburn 1977	Allocation: not randomised.
Richards 1997	Allocation: randomised. Participants: people with methamphetamine toxicity, not people with severe mental illnesses.
Richards 1998	Allocation: randomised. Participants: mostly people with drug‐induced toxicity (total 202), 20 with 'psychiatric illness'. Interventions: droperidol vs. lorazepam. Outcomes: sedation, re‐admission, adverse effects, additional drugs, time in emergency department, vital signs ‐ no data exclusively for 20 people with 'psychiatric illness'.
Rosen 1997	Allocation: randomised. Participants: mostly people with trauma and medical reasons for their disturbance (total 46), 1 with 'psychiatric' diagnosis. Interventions: droperidol vs. placebo. Outcomes: sedation, re‐admission, adverse effects, additional drugs, time in emergency department, vital signs ‐ no data exclusively for the person with 'psychiatric diagnosis'.
Thomas 1992	Allocation: randomised. Participants: mostly people who were intoxicated or had some form of underlying illness (trauma), no mention of psychoses or psychiatric illness.
Weiser 1973	Allocation: not randomised, case series.
Weiser 1975	Allocation: randomly assigned. Participants: people with schizophrenia ‐ acute/subacute (N = 50 but 5 added during study). Interventions: droperidol 100 mg vs. droperidol 150 mg vs. droperidol 200 mg vs. clopenthixol vs. clozapine. Outcomes: behaviour, mental state, length of stay in hospital, leaving the study early ‐ but not presented free of data from 5 non‐random additional participants.