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Horowitz MA, Framer A, Hengartner MP, Sørensen A, Taylor D. Estimating Risk of Antidepressant Withdrawal from a Review of Published Data. CNS Drugs 2023; 37:143-157. [PMID: 36513909 PMCID: PMC9911477 DOI: 10.1007/s40263-022-00960-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/20/2022] [Indexed: 12/15/2022]
Abstract
Adaptation of the brain to the presence of a drug predicts withdrawal on cessation. The outcome of adaptation is often referred to as 'physical dependence' in pharmacology, as distinct from addiction, although these terms have unfortunately become conflated in some diagnostic guides. Physical dependence to antidepressants may occur in some patients, consistent with the fact that some patients experience withdrawal effects from these medications. It is thought that longer duration of use, higher dose and specific antidepressants affect the risk of antidepressant withdrawal effects as they might cause greater adaptation of the brain. We searched PubMed for relevant systematic reviews and other relevant analyses to summarise existing data on determinants of antidepressant withdrawal incidence, severity and duration. Overall, data were limited. From survey data, increased duration of use was associated with an increased incidence and severity of withdrawal effects, consistent with some evidence from data provided by drug manufacturers. Duration of use may be related to duration of withdrawal effects but data are heterogenous and sparse. Serotonin and noradrenaline reuptake inhibitors and paroxetine are associated with higher risks than other antidepressants, though data for some antidepressants are lacking. Higher doses of antidepressant has some weak association with an increased risk of withdrawal, with some ceiling effects, perhaps reflecting receptor occupancy relationships. Past experience of withdrawal effects is known to predict future risk. Based on these data, we outline a preliminary rubric for determining the risk of withdrawal symptoms for a particular patient, which may have relevance for determining tapering rates. Given the limited scope of the current research, future research should aim to clarify prediction of antidepressant withdrawal risk, especially by examining the risk of withdrawal in long-term users of medication, as well as the severity and duration of effects, to improve the preliminary tool for predictive purposes. Further research into the precise adaptations in long-term antidepressant use may improve the ability to predict withdrawal effects for a particular patient.
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Affiliation(s)
- Mark Abie Horowitz
- North East London NHS Foundation Trust, Goodmayes Hospital, Ilford, UK. .,Division of Psychiatry, University College London (Honorary), Maple House, 149 Tottenham Court Rd, Fitzrovia, London, W1T 7BN, UK.
| | - Adele Framer
- SurvivingAntidepressants.org, San Francisco, CA USA
| | - Michael P. Hengartner
- Department of Applied Psychology, Zurich University of Applied Sciences, Zurich, Switzerland
| | - Anders Sørensen
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Capital Region of Denmark, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - David Taylor
- South London and Maudsley NHS Foundation Trust, London, UK ,Institute of Pharmaceutical Science, King’s College London, London, UK
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Horowitz MA, Taylor D. Distinguishing relapse from antidepressant withdrawal: clinical practice and antidepressant discontinuation studies. BJPSYCH ADVANCES 2022. [DOI: 10.1192/bja.2021.62] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
We now recognise that withdrawal symptoms from antidepressants are common, and can be severe and long-lasting in some people. Many withdrawal symptoms overlap with symptoms of anxiety or depression, making it difficult to distinguish withdrawal from relapse. We describe how their onset soon after dose reduction, the association of psychological with physical symptoms, their prompt response to reinstatement, and their typical ‘wave’ pattern of onset, peak and resolution can help distinguish withdrawal symptoms from relapse. We also examine evidence that suggests that antidepressant withdrawal symptoms are misdiagnosed as relapse in discontinuation studies aimed at demonstrating the ability of antidepressants to prevent future relapse (relapse prevention properties). In these discontinuation studies people have their antidepressants stopped abruptly, or rapidly, making withdrawal symptoms very likely, and little effort is made to measure withdrawal symptoms or distinguish them from relapse. We conclude that there is currently no robust evidence for the relapse prevention properties of antidepressants, and current guidance might need to be re-evaluated.
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Siwek M, Chrobak AA, Gorostowicz A, Krupa AJ, Dudek D. Withdrawal Symptoms Following Discontinuation of Vortioxetine-Retrospective Chart Review. Pharmaceuticals (Basel) 2021; 14:ph14050451. [PMID: 34064611 PMCID: PMC8151377 DOI: 10.3390/ph14050451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 12/21/2022] Open
Abstract
The efficacy of vortioxetine has been proven in many studies, but data concerning discontinuation symptoms (DS) after vortioxetine withdrawal is scarce. The aim of our study is to systematically evaluate the prevalence, determinants, and clinical features of vortioxetine DS in a retrospective chart review. Data were obtained from medical records of 263 adult patients with depressive disorders who discontinued former vortioxetine treatment. DS were observed in eight (3%) patients after 71-375 days (median 272) of treatment. DS emerged after median three days following vortioxetine withdrawal and lasted for median seven days. The clinical presentation of DS involved: emotional lability (100% of patients), irritability (75%), sudden worsening of mood (75%), nervousness (37.5%), and agitation (37.5%). Median DESS score was four (range of four to six). DS were significantly more prevalent after accidental vs. planned discontinuation (adjusted p = 0.011) and were less frequent after switching to a different antidepressant vs. ceasing pharmacotherapy (adjusted p = 0.0165). DS appeared more often if patients discontinued therapy without medical consultation (adjusted p = 0.033). The occurrence of DS was not associated with the dose and way of drug discontinuation (sudden vs. gradual). In sum, our results show that clinicians should be aware that vortioxetine withdrawal is associated with the possibility of DS.
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Affiliation(s)
- Marcin Siwek
- Department of Affective Disorders, Jagiellonian University Medical College, Kopernika Street 21a, 31-501 Kraków, Poland
- Correspondence: ; Tel.: +48-12-424-87-00
| | - Adrian Andrzej Chrobak
- Department of Adult Psychiatry, Jagiellonian University Medical College, Kopernika Street 21a, 31-501 Kraków, Poland; (A.A.C.); (D.D.)
| | - Aleksandra Gorostowicz
- Department of Psychiatry, Jagiellonian University Medical College, Kopernika Street 21a, 31-501 Kraków, Poland; (A.G.); (A.J.K.)
| | - Anna Julia Krupa
- Department of Psychiatry, Jagiellonian University Medical College, Kopernika Street 21a, 31-501 Kraków, Poland; (A.G.); (A.J.K.)
| | - Dominika Dudek
- Department of Adult Psychiatry, Jagiellonian University Medical College, Kopernika Street 21a, 31-501 Kraków, Poland; (A.A.C.); (D.D.)
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Guy A, Brown M, Lewis S, Horowitz M. The 'patient voice': patients who experience antidepressant withdrawal symptoms are often dismissed, or misdiagnosed with relapse, or a new medical condition. Ther Adv Psychopharmacol 2020; 10:2045125320967183. [PMID: 33224468 PMCID: PMC7659022 DOI: 10.1177/2045125320967183] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 09/24/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Stopping antidepressants commonly causes withdrawal symptoms, which can be severe and long-lasting. National Institute for Health and Care Excellence (NICE) guidance has been recently updated to reflect this; however, for many years withdrawal (discontinuation) symptoms were characterised as 'usually mild and self-limiting over a week'. Consequently, withdrawal symptoms might have been misdiagnosed as relapse of an underlying condition, or new onset of another medical illness, but this has never been studied. METHOD This paper outlines the themes emerging from 158 respondents to an open invitation to describe the experience of prescribed psychotropic medication withdrawal for petitions sent to British parliaments. The accounts include polypharmacy (mostly antidepressants and benzodiazepines) but we focus on antidepressants because of the relative lack of awareness about their withdrawal effects compared with benzodiazepines. Mixed method analysis was used, including a 'lean thinking' approach to evaluate common failure points. RESULTS The themes identified include: a lack of information given to patients about the risk of antidepressant withdrawal; doctors failing to recognise the symptoms of withdrawal; doctors being poorly informed about the best method of tapering prescribed medications; patients being diagnosed with relapse of the underlying condition or medical illnesses other than withdrawal; patients seeking advice outside of mainstream healthcare, including from online forums; and significant effects on functioning for those experiencing withdrawal. DISCUSSION Several points for improvement emerge: the need for updating of guidelines to help prescribers recognise antidepressant withdrawal symptoms and to improve informed consent processes; greater availability of non-pharmacological options for managing distress; greater availability of best practice for tapering medications such as antidepressants; and the vital importance of patient feedback. Although the patients captured in this analysis might represent medication withdrawal experiences that are more severe than average, they highlight the current inadequacy of health care systems to recognise and manage prescribed drug withdrawal, and patient feedback in general.
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Affiliation(s)
- Anne Guy
- Psychotherapist, Secretariat Co-ordinator for the All-Party Parliamentary Group for Prescribed Drug Dependence, Basingstoke, Hampshire, UK
| | - Marion Brown
- Retired Psychotherapist and Co-Founder of a Patient Support Group ‘Recovery and Renewal’, Helensburgh, UK
| | - Stevie Lewis
- Lived Experience of Prescribed Drug Dependence, Cardiff, UK
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Abstract
Antidepressant discontinuation symptoms occur with all classes of antidepressant. A well-described discontinuation syndrome occurs with the selective serotonin reuptake inhibitors, common symptoms including dizziness, headache, nausea and lethargy. Rare antidepressant discontinuation syndromes include extrapyramidal syndromes and mania/hypomania. All these syndromes, even isolated discontinuation symptoms, share three common features that facilitate diagnosis; abrupt onset within days of stopping the antidepressant, a short duration when untreated and rapid resolution when the antidepressant is reinstated. Clinicians need to be familiar with strategies for the prevention and management of such symptoms. Preventive strategies include warning patients about the possibility of discontinuation symptoms, encouraging good antidepressant adherence and tapering antidepressants at the end of treatment. Most symptoms are mild and short-lived. Consequently symptoms that follow planned termination of an antidepressant can often be managed by providing an explanation and reassurance. More severe symptoms should be treated symptomatically or the antidepressant restarted, in which case symptoms usually resolve within 24 h. More cautious tapering can then follow.
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Haddad PM, Dursun SM. Neurological complications of psychiatric drugs: clinical features and management. Hum Psychopharmacol 2008; 23 Suppl 1:15-26. [PMID: 18098217 DOI: 10.1002/hup.918] [Citation(s) in RCA: 151] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This paper reviews the main neurological complications of psychiatric drugs, in particular antipsychotics and antidepressants. Extrapyramidal syndromes include acute dystonia, parkinsonism, akathisia, tardive dyskinesia and tardive dystonia. Extrapyramidal symptoms (EPS) are less frequent with atypical than with conventional antipsychotics but remain common in clinical practice partly due to lack of screening by health professionals. Neuroleptic malignant syndrome (NMS) consists of severe muscle rigidity, pyrexia, change in conscious level and autonomic disturbance but partial forms also occur. NMS is particularly associated with the initiation and rapid increase in dose of high-potency antipsychotics but it has been reported with all the atypical antipsychotics and rarely with other drugs including antidepressants. Serotonin toxicity comprises altered mental state (agitation, excitement, confusion), neuromuscular hyperactivity (tremor, clonus, myoclonus, hyper-reflexia) and autonomic hyperactivity and occurs on a spectrum. Severe cases, termed serotonin syndrome, usually follow the co-prescription of drugs that increase serotonergic transmission by different pathways, for example a monoamine oxidase inhibitor (MAOI) and a selective serotonin reuptake inhibitor (SSRI). Most antipsychotics and antidepressants lower the seizure threshold and can cause seizures; the risk is greater with clozapine than with other atypical antipsychotics and greater with tricyclic antidepressants (TCAs) than with SSRIs. In randomised controlled trials in elderly patients with dementia atypical antipsychotics are associated with a higher risk of stroke and death than placebo. Cohort studies suggest that conventional drugs carry at least the same risk. Cessation of treatment with antipsychotics and antidepressants can lead to a wide range of discontinuation symptoms which include movement disorders and other neurological symptoms. Clinicians need to be familiar with strategies to reduce the risk of these adverse events and to manage them when they arise. Their occurrence needs to be balanced against the benefits of psychiatric drugs in terms of efficacy and improved quality of life in a range of disorders.
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Affiliation(s)
- Peter M Haddad
- Neuroscience and Psychiatry Unit, School of Psychiatry and Behavioural Sciences, University of Manchester, Manchester, UK.
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Abstract
Panic disorder is a chronic, recurrent illness, with a lifetime prevalence of about 5%. It is associated with substantial functional impairment, and studies suggest that treatment with medication alone (and no instruction in exposure to feared and avoided situations) is less than optimal. In fact, 40%-90% of patients in long-term follow-up studies in the late 1980s and early 1990s, treated with antidepressants or high potency benzodiazepines alone, remained somewhat symptomatic. Venlafaxine extended release (XR) was effective and well tolerated in both the short-term and long-term treatment of panic disorder. In 12-week trials, venlafaxine XR was significantly more effective than placebo in achieving a panic-free state (54%-70% vs 34%-48%, p=0.05), and was as effective as paroxetine. In addition, venlafaxine XR has been shown to produce significantly higher response and remission rates than placebo. Relapse rates were significantly reduced with ongoing venlafaxine XR treatment compared to switching to placebo (22% vs 50%, p=0.001), in a 6 month study. Importantly, venlafaxine XR significantly improved patient quality of life and functioning, and was generally well tolerated.
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Affiliation(s)
- Kevin Kjernisted
- University of British Columbia Vancouver, British Columbia, Canada
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Perahia DG, Kajdasz DK, Desaiah D, Haddad PM. Symptoms following abrupt discontinuation of duloxetine treatment in patients with major depressive disorder. J Affect Disord 2005; 89:207-12. [PMID: 16266753 DOI: 10.1016/j.jad.2005.09.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2005] [Revised: 08/26/2005] [Accepted: 09/05/2005] [Indexed: 11/25/2022]
Abstract
BACKGROUND Discontinuation symptoms are common following antidepressant treatment. This report characterizes symptoms following duloxetine discontinuation. METHODS Data were obtained from 9 clinical trials assessing the efficacy and safety of duloxetine in the treatment of major depressive disorder (MDD). RESULTS In a pooled analysis of 6 short-term treatment trials, in which treatment was stopped abruptly, discontinuation-emergent adverse events (DEAEs) were reported by 44.3% and 22.9% of duloxetine- and placebo-treated patients, respectively (p<0.05). Among duloxetine-treated patients reporting at least 1 DEAE, the mean number of symptoms was 2.4. DEAEs reported significantly more frequently on abrupt discontinuation of duloxetine compared with placebo were dizziness (12.4%), nausea (5.9%), headache (5.3%), paresthesia (2.9%), vomiting (2.4%), irritability (2.4%), and nightmares (2.0%). Dizziness was also the most frequently reported DEAE in the analyses of 3 long-term duloxetine studies. Across the short- and long-term data sets, 45.1% of DEAEs had resolved in the duloxetine-treated populations by the end of the respective studies, and the majority of these (65.0%) resolved within 7 days. Most patients rated the severity of their symptoms as mild or moderate. A higher proportion of patients reporting DEAEs were seen with 120 mg/day duloxetine compared with lower doses. For doses between 40 and 120 mg/day duloxetine the proportion of patients reporting at least one DEAE differed significantly from placebo. Extended treatment with duloxetine beyond 8-9 weeks did not appear to be associated with an increased incidence or severity of DEAEs. CONCLUSIONS Abrupt discontinuation of duloxetine is associated with a DEAE profile similar to that seen with other selective serotonin reuptake inhibitor (SSRI) and selective serotonin and norepinephrine reuptake inhibitor (SNRI) antidepressants. It is recommended that, whenever possible, clinicians gradually reduce the dose no less than 2 weeks before discontinuation of duloxetine treatment. LIMITATIONS The main limitation is the use of spontaneously reported DEAEs.
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Affiliation(s)
- David G Perahia
- Lilly Research Centre, EMC Building, Erl Wood Manor, Sunninghill Road, Windlesham, Surrey, GU20 6PH, UK.
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van Geffen ECG, Hugtenburg JG, Heerdink ER, van Hulten RP, Egberts ACG. Discontinuation symptoms in users of selective serotonin reuptake inhibitors in clinical practice: tapering versus abrupt discontinuation. Eur J Clin Pharmacol 2005; 61:303-7. [PMID: 15906018 DOI: 10.1007/s00228-005-0921-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2004] [Accepted: 03/07/2005] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Tapering of selective serotonin reuptake inhibitor (SSRI) therapy, as opposed to abrupt discontinuation, has been recommended by several guidelines and in the literature in order to diminish the occurrence of discontinuation symptoms. However, the evidence of a favourable effect of tapering is limited, and it is unclear how patients ought to discontinue SSRIs in daily life. The aim of this study was to examine the way in which patients discontinue SSRI therapy in clinical practice and to compare the effect of tapering with that of abrupt discontinuation on the occurrence of discontinuation symptoms. METHODS Patients (n = 74) who recently discontinued SSRI therapy completed a questionnaire containing questions about discontinuation symptoms (DESS events), the prescribed SSRI, reasons for discontinuation, way of discontinuation, knowledge of discontinuation symptoms, impact on daily life and patient counseling and education. The number of DESS events was compared among groups (abrupt discontinuation versus tapering; age; male versus female; paroxetine versus other SSRIs; knowledge of discontinuation symptoms at start of therapy versus lack of knowledge). RESULTS A total of 66 patients were eligible for analysis. Of all patients ending SSRI therapy, 21% abruptly discontinued therapy. There was a significant difference in the number of DESS events between abrupt discontinuation and tapering of SSRI therapy (12.0 versus 5.9). There was also a tendency for an adverse effect of lack of knowledge of discontinuation symptoms at the start of therapy on the number of DESS events (8.9 versus 5.5). CONCLUSION One in five patients abruptly discontinued their SSRI therapy in clinical practice. Abrupt discontinuation caused a larger increase in the number of discontinuation symptoms than tapering. We therefore advise tapering SSRI therapy in clinical practice to prevent unnecessary adverse effects of discontinuation.
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Affiliation(s)
- E C G van Geffen
- Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
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Haddad PM, Dursun SM. Re: Depression, stroke diagnosis, and SSRI discontinuation syndrome. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2004; 49:343-4; author reply 345-6. [PMID: 15198473 DOI: 10.1177/070674370404900516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ramasubbu R. Minor strokes related to paroxetine discontinuation in an elderly subject: emergent adverse events. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2003; 48:281-2. [PMID: 12776398 DOI: 10.1177/070674370304800415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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