Can bupropion cause psychosis at normal doses?

Comment by InpharmD Researcher

Available evidence, primarily derived from case studies, indicates that bupropion may cause psychosis, even at standard therapeutic doses. However, higher doses of bupropion appear to be associated with more severe outcomes, and the presence of preexisting psychotic symptoms and substance abuse may further increase the risk. Due to the anecdotal nature of the data and variability in reported outcomes, further research is warranted to elucidate the risk of psychosis associated with bupropion.

Background

Buproprion has raised concerns regarding its potential to induce psychosis due to its dopaminergic effects. In response to these concerns, a 2011 systematic review aimed to assess the risk of bupropion precipitating psychosis. A total of 23 studies, primarily consisting of case studies, were included in the review. Notably, various symptoms associated with bupropion were identified from the included studies, such as perceptual disturbances (e.g., altered time sense, vivid dreaming), as well as psychotic symptoms (e.g., paranoia, delirium, auditory and visual hallucinations, catatonia). These symptoms often emerged at higher doses, with several studies reporting psychosis at doses > 450 mg/day. One case study documented psychosis following an overdose of 4200 mg of bupropion sustained release. Additionally, a study comparing bupropion alone to bupropion combined with haloperidol for treating schizoaffective disorder found that three out of nine patients on bupropion alone experienced psychosis, while none in the combination group did. In cases involving pre-existing substance abuse, such as cocaine, alcohol, or cannabis, bupropion appeared to exacerbate psychosis, suggesting a potential causative role in sensitized individuals. Evidence also suggested that higher levels of bupropion metabolites were associated with adverse outcomes, indicating a possible dose-response relationship. Overall, while bupropion may induce or exacerbate psychotic symptoms in some cases, it was suggested that the evidence is not conclusive and further controlled studies are needed to clarify the risk of bupropion precipitating psychosis. For an overview of the case studies linking bupropion to psychotic symptoms, please refer to Table 1. [1]

References:

[1] Kumar S, Kodela S, Detweiler JG, Kim KY, Detweiler MB. Bupropion-induced psychosis: folklore or a fact? A systematic review of the literature. Gen Hosp Psychiatry. 2011;33(6):612-617. doi:10.1016/j.genhosppsych.2011.07.001

Literature Review

A search of the published medical literature revealed 4 studies investigating the researchable question:

Can bupropion cause psychosis at normal doses?

Level of evidence

D - Case reports or unreliable data  Read more→



Please see Tables 1-4 for your response.


Available case reports/series in which bupropion was linked to precipitation of psychotic symptoms  
Authors and Year Age Gender [M/F] Psychosis History [Y/N] Past Psych History Treatment Indication for Bupropion Antipsychotics [Y/N] Substance Use [Y/N] Total Dose per Day (mg) Positive Symptoms of Psychosis [Y/N] or Other Symptoms Treatment Duration
Dager et al., 1989 48 M N Bipolar disorder Depression N N 450 Delirium 2 W
Liberzon et al., 1990 75 M Y Depression Depression Y N 150 Delirium 3 D
Putten and Shaffer, 1990 41 M N Depression Depression N N 300 Y 14 D
Ames et al., 1992 Case 1 63 M N Depression, drug-induced mania Depression N N 300 Y 2 W
Ames et al., 1992 Case 2 50 M Y Bipolar disorder Depression N N 400 Y 4 W
Ames et al., 1992 Case 3 23 F N Depression Depression N N 150 Y 3 D
Jackson et al., 1992 19 M N Depression Depression N N 225 Y, catatonia 5 D
Howard and Warnock, 1999 79 M N Depression Depression N N 300 Y 4 D
Neumann et al., 2002 29 M N Substance abuse Smoking cessation N Y 300 Y 5 D
Wang et al., 2004 23 M N Depression Depression N N 4200 Y 12 H
Chan et al., 2006 51 M N Depression Depression N N 150 Delirium Unknown
Hahn et al., 2007 41 M Y Depression Depression N Y 150 Y 2 H
Bailey and Waters, 2008 28 F N None Smoking cessation N N 100 Y 1 W
Grover and Das, 2009 36 F N Bipolar disorder Depression N N 300 Y 2 W
Javelot et al., 2009 31 F Y Schizoaffective Smoking cessation Y N 150 Y 2 D
Farooque and Elliot, 2010 47 F N Depression, PTSD Depression Y Y 200 Y 16 W

Y/N, yes/no; I, instant-release formulation; S, sustained release; W, week; D, day; H, hour.

References:

Adapted from:
Kumar S, Kodela S, Detweiler JG, Kim KY, Detweiler MB. Bupropion-induced psychosis: folklore or a fact? A systematic review of the literature. Gen Hosp Psychiatry. 2011;33(6):612-617. doi:10.1016/j.genhosppsych.2011.07.001

 

Acute psychosis after bupropion treatment in a healthy 28-year-old woman

Design

Case report

Case presentation

A 28-year-old female presented with a primary concern of tobacco dependence and expressed a strong desire to cease smoking. Her medical history included a single episode of anxiety, which resolved without medical intervention, and infrequent gastrointestinal spasms managed with hyoscyamine. She had no significant surgical history, and her family history was devoid of psychiatric conditions. Her social history revealed a three-pack-per-year smoking habit, minimal alcohol consumption, and no use of illicit drugs. In response to her desire to quit smoking, the patient was initiated on bupropion (Wellbutrin SR) 100 mg daily, with a planned titration to 150 mg twice daily by the end of the second week. The potential risks and benefits of the treatment were thoroughly discussed, and the patient was advised to report any concerns.

One week after starting treatment, the patient contacted the clinic reporting severe paranoia, fearing that someone intended to harm her and her children. She also experienced panic attacks, suicidal ideation, and auditory hallucinations instructing her to self-harm. Despite these severe psychiatric symptoms, her orientation and memory remained intact. The patient declined in-person evaluation and dismissed the ideation as "silly" and "unreal," insisting she would not act on these thoughts. Following the discontinuation of bupropion, all psychiatric symptoms resolved within one week. At a follow-up visit two months later, she exhibited no residual symptoms.

Study Author Conclusions

Many physicians are well-versed in the use of bupropion for smoking cessation and depression. This represents the first case of bupropion-induced psychosis in a previously healthy patient with no comorbid substance abuse on low doses of the medication. In addition, this case brings to light the question, Is there a contraindication to prescribing bupropion with anticholinergic agents? Further studies will be necessary to elicit the answer to this question.
References:

Bailey J, Waters S. Acute psychosis after bupropion treatment in a healthy 28-year-old woman. J Am Board Fam Med. 2008;21(3):244-245. doi:10.3122/jabfm.2008.03.070236

 

Delayed Psychosis Induced by Bupropion in a Former Cocaine Abuser: A Case Report

Design

 Case report

Case presentation

A 47-year-old African American woman, diagnosed in 2007 with mild recurrent major depressive disorder, posttraumatic stress disorder, and cocaine abuse (in early full remission), began feeling depressed following her husband's recent colon cancer diagnosis 7 months before this report. She was hospitalized and prescribed escitalopram 20 mg and trazodone 50 mg at bedtime, as needed for insomnia. Additionally, five months prior, she returned to the clinic with significant improvement in her depressive symptoms but continued to experience low energy levels. She occasionally had flashbacks of her boyfriend being shot and witnessing relatives die in a fire. Despite some improvement, she remained withdrawn, lacked motivation, and struggled with sleep. Her trazodone dose was increased to 100 mg at bedtime as needed, and bupropion sustained release (SR) 100 mg BID daily was added to address low energy.

Two months later, the patient reported significant improvement with good energy levels, though she still experienced occasional flashbacks. She denied depressive, manic, psychotic, paranoid, or suicidal symptoms, and her sleep was stable with medication. However, four months after starting bupropion, she returned with increased paranoia, withdrawal, a feeling of being watched, and visual disturbances like seeing shadows. The patient also continued to have nightmares about past abuse. Suspecting bupropion-induced psychosis, bupropion was discontinued and paliperidone 3 mg daily was initiated. Consequently, her condition significantly improved two weeks later: she no longer saw shadows, denied paranoia or depression, and began leaving her home, though she remained somewhat hesitant and continued to have occasional nightmares.

Study Author Conclusions

Quick reversal of psychosis after discontinuation of bupropion supports the hypothesis that it was drug-induced. Development of psychotic symptoms after bupropion initiation could be explained by the reuptake inhibition of dopamine. It is likely that the dopaminergic neurons are already damaged and sensitized in cocaine abusers and the addition of bupropion will impair the functioning further. Our patient noted significant improvement in energy level for 1–2 months before developing psychosis, which occurred approximately 4 months after the start of bupropion treatment. We do not have a good explanation at this time for why the patient developed delayed psychosis. However, it is likely that there is a lag period of sensitization of neurons in cocaine abusers after being sober.
References:

Farooque M, Elliott J. Delayed psychosis induced by bupropion in a former cocaine abuser: a case report. Prim Care Companion J Clin Psychiatry. 2010;12(5):PCC.09100943. doi:10.4088/PCC.09l00943gry

 

Two Acute Psychotic Episodes After Administration of Bupropion: A Case of Involuntary Rechallenge

Design

Case report

Case presentation

A 31-year-old Caucasian woman with a history of schizoaffective disorder and significant smoking history had been stable on outpatient psychiatric care, including olanzapine 10 mg daily and alprazolam 0.25 mg twice daily. Her previous psychiatric history included a three-month hospitalization for acute delirium and mania, but she had remained stable until recently.

During her first acute delirium episode, the patient was admitted for acute psychomotor agitation after starting bupropion SR (150 mg/day) as part of a smoking cessation program. She had begun the medication two days prior to her hospitalization. Upon admission, she exhibited persecutory delusions, dissociative symptoms, and aggressive behavior. Laboratory results were inconclusive. Bupropion was discontinued, and her treatment regimen was adjusted to include olanzapine 20 mg daily, cyamemazine 30 mg three times daily, and alprazolam 0.5 mg three times daily. Despite initial resistance and delusions of poisoning, her condition improved with as-needed loxapine injections. She was discharged after 12 days, with a reduced olanzapine dose of 5 mg daily and alprazolam 0.25 mg twice daily.

One month later, the patient was readmitted with severe agitation, delusions of persecution, and manic symptoms, including pressured speech, flight of ideas, and pronounced aggressiveness. A family interview revealed she had resumed bupropion SR (150 mg/day) four days before this episode, against medical advice. Her treatment was adjusted to olanzapine 20 mg daily, clonazepam 2 mg three times daily, and divalproate 2.5 g daily. Her condition stabilized over 15 days, and she was discharged after a month of hospitalization. Bupropion was permanently discontinued, and she remained stable without recurrence of psychotic symptoms during the following seven months.

Study Author Conclusions

This case is a reminder that a great amount of caution is needed when starting treatment with bupropion, especially in patients with a history of psychotic episodes.

To our knowledge, this is the first reported case of involuntary rechallenge during treatment with bupropion that has induced two acute psychotic episodes.

References:

Javelot H, Baratta A, Weiner L, et al. Two acute psychotic episodes after administration of bupropion: a case of involuntary rechallenge. Pharm World Sci. 2009;31(2):238-240. doi:10.1007/s11096-008-9272-x