Quetiapine Prescribing Research Articles

Physician Antipsychotic Overprescribing Letters and Cognitive, Behavioral, and Physical Health Outcomes Among People With Dementia

Antipsychotics, such as quetiapine, are frequently prescribed to people with dementia to address behavioral symptoms but can also cause harm in this population. To determine whether warning letters to high prescribers of quetiapine can successfully reduce its use among patients with dementia and to investigate the impacts on patients' health outcomes. This is a secondary analysis of a randomized clinical trial of overprescribing letters that began in April 2015 and included the highest-volume primary care physician (PCP) prescribers of quetiapine in original Medicare. Outcomes of patients with dementia were analyzed in repeated 90-day cross-sections through December 2018. Analyses were conducted from September 2021 to February 2024. PCPs were randomized to a placebo letter or 3 overprescribing warning letters stating that their prescribing of quetiapine was high and under review by Medicare. The primary outcome of this analysis was patients' total quetiapine use in days per 90-day period (the original trial primary outcome was total quetiapine prescribing by study PCPs). Prespecified secondary outcomes included measures of cognitive function and behavioral symptoms from nursing home assessments, indicators of depression from screening questionnaires in assessments and diagnoses in claims, metabolic diagnoses derived from assessments and claims, indicators of use of the hospital and other health care services, and death. Outcomes were analyzed separately for patients living in nursing homes and in the community. Of the 5055 study PCPs, 2528 were randomized to the placebo letter, and 2527 were randomized to the 3 warning letters. A total of 84 881 patients with dementia living in nursing homes and 261 288 community-dwelling patients with dementia were attributed to these PCPs. There were 92 874 baseline patients (mean [SD] age, 81.5 [10.5] years; 64 242 female [69.2%]). The intervention reduced quetiapine use among both nursing home patients (adjusted difference, -0.7 days; 95% CI, -1.3 to -0.1 days; P = .02) and community-dwelling patients (adjusted difference, -1.5 days; 95% CI, -1.8 to -1.1 days; P < .001). There were no detected adverse effects on cognitive function (cognitive function scale adjusted difference, 0.01; 95% CI, -0.01 to 0.03; P = .19), behavioral symptoms (agitated or reactive behavior adjusted difference, -0.2%; 95% CI -1.2% to 0.8% percentage points; P = .72), depression, metabolic diagnoses, or more severe outcomes, including hospitalization and death. This study found that overprescribing warning letters to PCPs safely reduced quetiapine prescribing to their patients with dementia. This intervention and others like it may be useful for future efforts to promote guideline-concordant care. ClinicalTrials.gov Identifier: NCT05172687.

Association between quetiapine use and self-harm outcomes among people with recorded personality disorder in UK primary care: A self-controlled case series analysis.

Quetiapine is frequently prescribed to people with personality disorder diagnoses, but this is not supported by evidence or treatment guidelines. To examine associations between periods of quetiapine prescribing and self-harm events in people with personality disorder. Self-controlled case series using linked primary care and hospital records covering the period 2007-2017. We calculated incidence rates and incidence rate ratios (IRRs) for self-harm events during periods when people were prescribed (exposed to) quetiapine, as well as periods when they were unexposed or pre-exposed to quetiapine. We analysed data from 1,082 individuals with established personality disorder diagnoses, all of whom had at least one period of quetiapine prescribing and at least one self-harm episode. Their baseline rate of self-harm (greater than 12 months before quetiapine treatment) was 0.52 episodes per year. Self-harm rates were elevated compared to the baseline rate in the month after quetiapine treatment was commenced (IRR 1.85; 95% confidence interval (CI) 1.46-2.34) and remained raised throughout the year after quetiapine treatment was started. However, self-harm rates were highest in the month prior to quetiapine initiation (IRR 3.59; 95% CI 2.83-4.55) and were elevated from 4 months before quetiapine initiation, compared to baseline. Self-harm rates were elevated throughout the first year of quetiapine prescribing, compared to the baseline rate. However, rates of self-harm reduced in the month after patients commenced quetiapine, compared to the month before quetiapine was initiated. Self-harm rates gradually dropped over a year of quetiapine treatment. Quetiapine may acutely reduce self-harm. Longer-term use and any potential benefits need to be balanced with the risk of adverse events.

A scoping review of perceptions from healthcare professionals on antipsychotic prescribing practices in acute care settings

BackgroundAntipsychotic medications are frequently prescribed in acute care for clinical indications other than primary psychiatric disorders such as delirium. Unfortunately, they are commonly continued at hospital discharge and at follow-ups thereafter. The objective of this scoping review was to characterize antipsychotic medication prescribing practices, to describe healthcare professional perceptions on antipsychotic prescribing and deprescribing practices, and to report on antipsychotic deprescribing strategies within acute care.MethodsWe searched MEDLINE, EMBASE, PsycINFO, CINAHL, and Web of Science databases from inception date to July 3, 2021 for published primary research studies reporting on antipsychotic medication prescribing and deprescribing practices, and perceptions on those practices within acute care. We included all study designs excluding protocols, editorials, opinion pieces, and systematic or scoping reviews. Two reviewers screened and abstracted data independently and in duplicate. The protocol was registered on Open Science Framework prior to data abstraction (10.17605/OSF.IO/W635Z).ResultsOf 4528 studies screened, we included 80 studies. Healthcare professionals across all acute care settings (intensive care, inpatient, emergency department) perceived prescribing haloperidol (n = 36/36, 100%) most frequently, while measured prescribing practices reported common quetiapine prescribing (n = 26/36, 76%). Indications for antipsychotic prescribing were delirium (n = 48/69, 70%) and agitation (n = 20/69, 29%). Quetiapine (n = 18/18, 100%) was most frequently prescribed at hospital discharge. Three studies reported in-hospital antipsychotic deprescribing strategies focused on pharmacist-driven deprescribing authority, handoff tools, and educational sessions.ConclusionsPerceived antipsychotic prescribing practices differed from measured prescribing practices in acute care settings. Few in-hospital deprescribing strategies were described. Ongoing evaluation of antipsychotic deprescribing strategies are needed to evaluate their efficacy and risk.

Off-label prescribing of quetiapine in south locality crisis teams

AimsThe audit was carried out to determine the frequency of off label prescribing of quetiapine and compliance with standards within Trust Policy (UHM PGN 02 PPT PGN 08) – Physical Health Monitoring of Patients Prescribed Antipsychotics and other Psychotropic Medicines, NICE CG178, General Medical Council Ethical Standards and Royal College of Psychiatrists – College Report CR210.The main objectives of the audit were to determine if:Patients have been appropriately informed of off-label status and consent recorded.Alternative licensed treatment first used/ruled out.Appropriate communication on transfer of care.Appropriate physical health monitoring completed.BackgroundQuetiapine is associated with various physical side effects. Patients should be fully informed of the expected risks and benefits of treatment, and the limited evidence base for off-label prescribing.There are additional issues around the transfer of prescribing to primary care.MethodThe sample consisted of 50 consecutive patients selected from the crisis team caseload in the month of December 2018.Data reviewed in this audit were taken from six months period.Records audited were obtained from RiO (electronic records) and prescription charts.Data collection was started in January 2019 and completed in March 2019The audit tool was a dichotomous scale questionnaire based on NICE guidelines.Result4 patients from the sample (8%) were prescribed off-label quetiapine.100% had physical health monitoring completed as per Trust policy.100% off-label indication been clearly documented in notes.100% Consent to treatment was documented.100% had medication reviewed in the previous 6 months.75% had licensed medication used or ruled out before considering off-label quetiapine use25% risks/benefits of treatment were documented as part of a patient discussion.25% had documented evidence that alternative treatment options were discussed.25% had documented evidence of Community consultant/GP consent/agreement was obtained before transfer of prescribing75% had a documented plan for review of quetiapine for treatment efficacy and side effects50% had a documented plan in place for ongoing physical health monitoringConclusionSuggested a wider audit may be required with greater patient numbers and which specifically filters for patients prescribed quetiapine.Audit result has been shared with Crisis team members, Medicines Optimisation Committee and South Locality Quality Standards Committee in the trust.

Off-label prescribing of quetiapine in HMP Elmley, a Category B remand prison: a re-audit

AimsThis was a re-audit of off-label prescribing of quetiapine in order to identify the number of patients on off-label quetiapine in HMP Elmley, to monitor compliance by the Mental Health Inreach Team (MHIRT) psychiatrists with the Royal College of Psychiatrists guideline on off-license prescribing, to compare findings with the baseline audit and to identify areas for improvement.MethodAll patients on quetiapine in HMP Elmley were identified and their electronic patient record was reviewed against the standards outlined in the Royal College of Psychiatrists “Use of licensed medicines for unlicensed applications in psychiatric practice (2nd edition).ResultThere were 60 residents on off-license quetiapine prescription in HMP Elmley.Of this number, four had their prescription initiated by a general practitioner, either while in prison or in the community. Two residents were on quetiapine first prescribed while they were on admission in hospital. 5 patients had been initiated by the MHIRT psychiatrists. 38 residents were commenced off-license quetiapine by another psychiatrist, either while they were in the community or in another prison. In 17 patients, electronic records were inadequate to determine who had prescribed the quetiapine.The number of inmates prescribed off-label quetiapine in HMP Elmley had dropped from 82 to 60 in the 1 year since the initial audit. Of these figures, prescriptions initiated by the MHIRT psychiatrists, had dropped from 28.1% (23/82) to 8.3% (5/60).For those prescribed quetiapine by the HMP Elmley psychiatrists, notes were audited against the RCPsych guidelines: Licensed medication was considered first in 80.0%Risks and benefits were considered and documented in 80.0%The benefits and potential risks were explained to patient in 80.0%There was documentation of informed consent in 80.0%Quetiapine was started at a low dose and monitored in 100%No residents required withdrawal of medication due to ineffectiveness or adverse effects.Baseline physical health assessment was performed in 80.0%, though all had an ECG done.ConclusionOver the past year there has been an improvement in off-label antipsychotic prescribing practice within the MHIRT.However, the number of off-label antipsychotic prescriptions still remains high throughout the prison. There should be continued effort at minimizing off-label prescribing within the MHIRT, monitored by auditing. However, work needs to be done jointly with other prescribers, such as GP colleagues, in order to avoid unnecessary prescriptions and to monitor regularly the physical and mental health of those on off-label quetiapine.

Off‐label quetiapine prescribing in general hospital inpatients: an Australian experience

AbstractBackgroundQuetiapine is frequently prescribed off‐label in the community but little is known about the initiation and use of quetiapine in general (non‐psychiatry) hospital settings.AimThis study examined the extent of off‐label quetiapine prescribing and rates of initiation of quetiapine in a general inpatient population of an Australian inner city teaching hospital, as well as the frequency of communication with community prescribers following discharge.MethodsA retrospective observational study was conducted of all patients admitted under all non‐psychiatric teams and prescribed quetiapine within a tertiary teaching hospital between 1 January 2011 and 31 December 2016. All quetiapine prescribing information was extracted from an electronic medication management system (EMMS) and medical records were reviewed for a random sample of 100 patients prescribed quetiapine.ResultsEMMS data indicated that 793 people were prescribed quetiapine over the study period. Quetiapine was most frequently prescribed once daily, with a median daily dose of 100 mg (interquartile range 37.5–200 mg). Eighty‐seven of the 100 medical records reviewed had corresponding discharge summaries, and potentially off‐label quetiapine prescribing was found in 48 people (55%); the most frequent off‐label indication was for agitation or delirium. Of the 33 people who had quetiapine initiated in hospital, 26 prescriptions (79%) were for off‐label indications. Of the 11 prescriptions (33%) continued at discharge, only three (27%) discharge summaries contained instructions to community prescribers regarding quetiapine.ConclusionOff‐label prescribing of quetiapine was common in this sample of inpatients, and senior hospital staff should remain cautious of quetiapine prescribing for indications where the evidence of harms and benefits remains unclear. Communication with community prescribers could also be improved to reduce the risk of conversion from intended short‐term off‐label use to longer‐term use.

Forskrivning av antipsykotika til hjemmeboende eldre 2006–18

It is generally agreed that prescribing of antipsychotic drugs to older patients should be reduced, but figures for the prescribing of these drugs to older patients living at home in Norway are not available. The study aimed to investigate developments in prescribing of antipsychotic drugs among older patients living at home from 2006 to 2018, and whether there were differences in prescribing rates between the age groups 65-74 years, 75-84 years and 85 years or older. Data were retrieved from the Norwegian Prescription Database. All persons aged 65 years or older who were dispensed at least one antipsychotic drug in 2006, 2010, 2014 and 2018 were included, and gender-specific prevalence for the ten most widely used antipsychotic drugs was calculated. The proportion of patients aged 65 or older who were prescribed antipsychotic drugs in the period decreased for both sexes. For the age group 65-74 years, an increase was found from 2014 to 2018. There was a clear decrease in the prescribing rate for prochlorperazine and levomepromazine, whereas prescriptions for quetiapine increased. Attention should be paid to the increase in prescribing of antipsychotic drugs for the youngest age group of older patients (65-74 years) in the last four years, along with the increase in prescribing of quetiapine for older patients.

Effect of Peer Comparison Letters for High-Volume Primary Care Prescribers of Quetiapine in Older and Disabled Adults

Antipsychotic agents, such as quetiapine fumarate, are frequently overprescribed for indications not supported by clinical evidence, potentially causing harm. To investigate if peer comparison letters targeting high-volume primary care prescribers of quetiapine meaningfully reduce their prescribing. Randomized clinical trial (intent to treat) conducted from 2015 to 2017 of prescribers and their patients nationwide in the Medicare program. The trial targeted the 5055 highest-volume primary care prescribers of quetiapine in 2013 and 2014 (approximately 5% of all primary care prescribers of quetiapine). Prescribers were randomized (1:1 ratio) to receive a placebo letter or 3 peer comparison letters stating that their quetiapine prescribing was high relative to their peers and was under review by Medicare. The primary outcome was the total quetiapine days supplied by prescribers from the intervention start to 9 months. Secondary outcomes included quetiapine receipt from all prescribers by baseline patients, quetiapine receipt by patients with low-value or guideline-concordant indications for therapy, mortality, and hospital use. In exploratory analyses, the study followed outcomes to 2 years. Of the 5055 prescribers, 231 (4.6%) were general practitioners, 2428 (48.0%) were in family medicine, and 2396 (47.4%) were in internal medicine; 4155 (82.2%) were male. All were included in the analyses. Over 9 months, the treatment arm supplied 11.1% fewer quetiapine days per prescriber vs the control arm (2456 vs 2864 days; percentage difference, 11.1% fewer days; 95% CI, -13.1% to -9.2% days; P < .001; adjusted difference, -319 days; 95% CI, -374 to -263 days; P < .001), which persisted through 2 years (15.6% fewer days; 95% CI, -18.1% to -13.0%; P < .001). At the patient level, individuals in the treatment arm received 3.9% (95% CI, -5.0% to -2.9%; P < .001) fewer days of quetiapine from all prescribers over 9 months, with a larger decrease among patients with low-value vs guideline-concordant indications (-5.9% [95% CI, -8.0% to -3.9%] vs -2.4% [95% CI, -4.0% to -0.9%], P = .01 for test that effects were equal for both patient groups). There was no evidence of substitution to other antipsychotics, and 9-month mortality and hospital use were similar between the treatment vs control arms. Peer comparison letters caused substantial and durable reductions in quetiapine prescribing, with no evidence of negative effects on patients. ClinicalTrials.gov identifier: NCT02467933.

Nudging Physicians to Reduce Quetiapine Prescribing Using Medicare Letters

Nudging Physicians to Reduce Quetiapine Prescribing Using Medicare Letters

Prescribing Trends in US Active Duty Service Members With Posttraumatic Stress Disorder: A Population-Based Study From 2007-2013.

The US Veterans Affairs (VA)/Department of Defense (DoD) Posttraumatic Stress Disorder (PTSD) Clinical Practice Guidelines provide evidence-based pharmacologic treatment recommendations. Selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs) are considered first-line medications. Benzodiazepines are relatively contraindicated with a warning that they may cause harm. This population-based study is the first to describe prescribing patterns for active duty service members (ADSMs) diagnosed with PTSD. Health-care-related administrative DoD data from federal fiscal years 2007 through 2013 identified ADSMs with PTSD using ICD-9 codes. Prescription frequencies for antidepressants, benzodiazepines, antipsychotics, anticonvulsants, and other psychotropic medications were calculated for each year. Between 2007 and 2013, ADSMs with a PTSD diagnosis increased from 16,931 to 70,942. SSRI or SNRI prescribing decreased from 55.4% in 2007 to 41.8% in 2010 before increasing to 54.9% in 2013. Benzodiazepine prescribing was stable between 20.9% and 22.3% through 2010 before increasing to 24.7% by 2013. Antipsychotic prescribing declined from 22.6% in 2007 to 14.6% in 2013, driven by a decrease in low-dose quetiapine (≤ 300 mg/d) prescribing, which declined from 19.1% in 2007 to 8.2% in 2013. The increase in SSRI or SNRI prescribing after 2010 and the overall increase in prazosin and decrease in low-dose quetiapine prescribing all suggest increased concordance with the VA/DoD PTSD Clinical Practice Guidelines. The decline in SSRI prescribing up to 2010 is not concordant. The increase in benzodiazepine prescribing, a trend opposite that observed in the VA, is concerning.

The lesser of two evils: a qualitative study of quetiapine prescribing by family physicians.

Quetiapine is an antipsychotic that is widely prescribed off-label by family physicians despite evidence that safer alternatives exist. The aim of this research was to explore, in-depth, family physicians' reasons for this behaviour. We conducted qualitative interviews with 15 urban family physicians in Alberta between October 2015 and April 2016. Participants were purposively selected based on sex, years of experience and practice type. Interviews explored participants' experiences prescribing quetiapine. Interviews were recorded, transcribed verbatim and coded with the use of thematic analysis. A wish to support day-to-day function of patients with complex psychosocial needs without causing benzodiazepine addiction motivated participants to prescribe quetiapine. The indications were varied and included incomplete symptom resolution, unclear or multiple mental health diagnoses, and complicated psychosocial problems. Family physicians benchmarked their prescribing against peers and were reluctant to stop medication started by colleagues. Limited knowledge of quetiapine's adverse effects led prescribers to choose low dosages. Quetiapine helped family physicians treat patients with complex mental health problems without prescribing benzodiazepines, but awareness of quetiapine's adverse effects was poor. Education about quetiapine should combine psychopharmacology with multidisciplinary educational initiatives that focus on symptom resolution, comorbidity and nondrug options to promote more appropriate prescribing.

Average duration of treatment with antipsychotics among concession card holders in Australia.

To analyse average treatment duration with antipsychotics reimbursed for concession card holders under the Pharmaceutical Benefits Scheme; the proportion of initial prescribing by general practitioners, psychiatrists and other physician; and the trend in drug choice in Australia. Based on a representative 10% sample of patients receiving Pharmaceutical Benefits Scheme prescriptions since 2005, antipsychotics redeemed by concession card holders in the period from 2010 to 2013 were analysed. A 5-year baseline period was used to exclude prevalent users from incident users. Treatment duration was estimated using the epidemiological equation: prevalence/incidence = average duration. The overall average treatment duration was 3.0 years, ranging from 1.5 years in patients aged 75 years and older to more than 4 years among patients aged 25-64 years. The most commonly used antipsychotics were olanzapine, risperidone and quetiapine, with average duration of 2.9, 2.1 and 1.7 years, respectively. Amisulpride was used longest with an average duration of 3.7 years. Quetiapine is currently the most prescribed antipsychotic and the main antipsychotic prescribed by psychiatrists to new users. The increased prescribing of quetiapine among general practitioners explains the rapid increase in the overall use of quetiapine. General practitioners initiated therapy in about 70% of cases, while psychiatrists and other physicians in about 15% each. In children younger than 15 years of age, paediatricians initiated such treatment in 47%. General practitioners both initiate and maintain treatment with antipsychotics for most adults, while paediatricians mainly begin such treatment in children. The substantial increase in use of quetiapine among general practitioners, along with the short treatment duration for quetiapine, strengthens a concern about antipsychotics increasingly used for less severe disorders. Increased collaboration between paediatricians and psychiatrists regarding the youngest and between general practitioners and psychiatrists or geriatricians regarding adults and older patients seems required.

Concerns about quetiapine.

Quetiapine is subsidised by the Pharmaceutical Benefits Scheme to treat schizophrenia and bipolar disorder. An extended-release formulation is also approved for use, but not subsidised, for treatment-resistant depression and generalised anxiety disorder. There is increasing off-label prescribing of quetiapine for indications such as insomnia that have little evidence to support them. This prescribing is often for at-risk patients, such as people with personality or social vulnerabilities and those at risk of metabolic complications or cardiovascular events. More evidence is required to support prescribing decisions regarding these off-label indications. In the meantime prescribers should be supported with alternatives to prescribing for these conditions, such as psychological therapies that have a better evidence base and safety record.

‘Out of the frying pan’: the challenges of prescribing for insomnia in psychiatric patients

Managing insomnia is a common challenge for psychiatrists and their patients. We have observed an increasing use of quetiapine as a hypnosedative. We conducted an audit with the aim of establishing the prescribing patterns of local general psychiatrists in New Zealand, comparing them with established guidelines and determining the extent of the prescribing of quetiapine as a hypnosedative. Participant psychiatrists were recruited from peer review groups. Each participant provided anonymised prescribing information from 10 patients and noted their intention when prescribing. Twenty-five clinicians (58% response rate) responded with prescriptions for 100 in-patients and 177 community mental health patients. 60% of in-patients and 62% of community patients were prescribed medications to aid with sleep. The most commonly prescribed medications were zopiclone, quetiapine and benzodiazepines. Prescribing adhered with the recommended guidelines for 20% of benzodiazepine and 35% of zopiclone prescriptions. Two thirds (60%) of the community prescriptions for quetiapine were primarily for hypnosedation. There is little concordance between guidelines for hypnosedative prescribing and the practices of general psychiatrists. Less zopiclone and fewer benzodiazepines were prescribed than in other studies, while more quetiapine was prescribed. The 'off-label' use of quetiapine and the duration of zopiclone and benzodiazepine use are discussed.

Psychotropic medication abuse by inmates in correctional facilities

I noted an alarming surge in the prescribing of quetiapine (Seroquel) in our County correctional facility, Santa Rita Jail, approximately five years ago. The number of quetiapine tablets dispensed surpassed all other antipsychotic medications combined, in the observed three-month period. This sudden four-fold increase in prescribing to inmates by our psychiatrists was extremely unusual and warranted further investigation.

Patterns and Trends in Antipsychotic Prescribing for Parkinson Disease Psychosis

Antipsychotic (AP) use is common in Parkinson disease (PD), but APs can worsen parkinsonism, evidence for efficacy is limited, and use in patients with dementia increases mortality. To examine the frequency and characteristics, including changes over time, of AP use in a large cohort of patients with PD. Using Veterans Affairs data from fiscal year (FY) 2008, rates and predictors of AP prescribing were determined for patients with PD and psychosis stratified by dementia status (N = 2597) and a comparison group of patients with dementia and psychosis without PD (N = 6907). Fiscal year 2008 and FY2002 data were compared to examine changes in AP prescribing over time. Department of Veterans Affairs outpatient facilities. Outpatients with PD and psychosis and outpatients without PD with dementia and psychosis, all receiving care at Veterans Affairs facilities in FY2002 and FY2008. Antipsychotic prescribing, including overall, class, and specific medications. In FY2008, 50% of patients with PD having a diagnosis of psychosis were prescribed an AP. Among treated patients, the atypical AP quetiapine was most frequently prescribed (66%), but approximately 30% received high-potency APs. Clozapine was rarely prescribed (<2%). In multivariate models, diagnoses of PD and dementia were associated with AP use. Comparing FY2008 with FY2002, AP use in PD was unchanged, with decreases in risperidone and olanzapine use offset by an increase in quetiapine prescribing and the introduction of aripiprazole. Half of the patients with PD and psychosis receive APs, not uncommonly high-potency agents associated with worsening parkinsonism, and frequency of use has been unchanged since the "black box" warning for AP use in patients with dementia was issued. Recent trends are a shift to quetiapine use and the common use of aripiprazole. As psychosis and dementia are frequently comorbid in PD, safety risks associated with AP use in this population need to be assessed.

Quetiapine for Sleep in Patients with Dementia

to examine the use of quetiapine for sleep in patients with dementia admitted to a geriatric psychiatry ward. retrospective cross-sectional study (January 2007 to December 2009). geriatric psychiatric unit located near a metropolitan city in North Carolina. all patients admitted with a diagnosis of dementia who were also receiving quetiapine were eligible. One hundred one patients met the criteria and were included in the study. none. descriptive statistics defining quetiapine prescribing. Based on a priori criteria, quetiapine was considered to be used for sleep if it were prescribed: 1) only at bedtime, as needed, for sleep, 2) once daily, only at bedtime, or 3) multiple times daily, but with at least 75% of the daily dose administered at bedtime. forty-three of the 101 patients included in the study were prescribed quetiapine, probably for sleep. Quetiapine, when used as a sedative-hypnotic, was generally employed at doses between 50 mg and 100 mg nightly. Several published studies report beneficial sleep-promoting effects of quetiapine and other atypical antipsychotics for primary and secondary sleep complaints; however, most of these trials involve young and middle-aged adults, have diagnostic variability, and are limited methodologically. quetiapine prescribed as a sedative-hypnotic in patients with dementia, while common, is understudied and not without risk.