Table 2.

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Adults (age 18 and above)	Service users currently under section (Mental Health Act, Forensic, Community Treatment Order) or currently in crisis or studies discussing Crisis services (Home Treatment Team etc)
Diagnosis of Psychosis, schizophrenia, psychosis like symptoms (SMI)	Animal studies
Medication reviews, care and treatment of service users diagnosed with SMI	Physical health reviews only, which do not include factors around treating SU or have medication reviews alongside
Published after 1954 (year the first antipsychotic was introduced)	Studies discussing prescription of non-antipsychotic medications
Published in English language	Studies from low- and middle-income countries
All study methodologies	Studies discussing the prevalence, and treatment of side effects by adding other (non-antipsychotic) medications
Prescription of antipsychotic medication in primary care	Studies discussing the prevalence or validity of a diagnosis of severe mental illness
	Off – label prescribing
	Excluded later:
	• Studies investigating bipolar disorder
	• Clozapine