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Bupropion Side Effects

The most commonly reported side effects of bupropion include nausea, fatigue, and headache, based on 161,879 FDA adverse event reports from 2004 to 2025. 6.7% of reports found the drug to be ineffective.

Bupropion side effects

Percentages show how often each reaction appears relative to total reports for bupropion.

1
Drug Ineffective6.7%10,822
2
Nausea6.1%9,900
3
Fatigue5.6%9,011
4
Headache5.3%8,509
5
Depression4.3%7,012
6
Off Label Use4.0%6,413
7
Dizziness3.9%6,250
8
Anxiety3.9%6,236
9
Pain3.7%5,933
10
Completed Suicide3.4%5,543
11
Diarrhoea3.0%4,867
12
Toxicity To Various Agents2.7%4,322
13
Vomiting2.7%4,312
14
Insomnia2.6%4,240
15
Feeling Abnormal2.5%4,034

These are voluntary reports and do not establish that bupropion caused these reactions.

Report severity

55.9%Serious90,539 reports
22.2%Hospitalizations35,891 reports
9.3%Fatal15,120 reports

Seriousness is determined by the reporter, not by OpenClaim.

Bupropion drug interactions

Other drugs that appear in adverse event reports alongside bupropion. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Naltrexone5.4%8,785
2
Sodium-oxybate4.1%6,684
3
Quetiapine-fumarate4.0%6,496
4
Adalimumab3.7%5,927
5
Venlafaxine2.3%3,699
6
Gabapentin2.2%3,484
7
Aripiprazole2.1%3,365
8
Acetaminophen2.1%3,356
9
Duloxetine-hydrochloride2.0%3,186
10
Citalopram-hydrobromide1.9%3,127
11
Lamotrigine1.9%3,091
12
Clonazepam1.9%3,050
13
Sertraline-hydrochloride1.9%3,021
14
Dextromethorphan1.8%2,891
15
Fluoxetine-hydrochloride1.7%2,744

Taken alongside

1
Acetaminophen10.8%17,507
2
Ergocalciferol10.6%17,192
3
Levothyroxine-sodium10.6%17,187
4
Gabapentin9.0%14,554
5
Aspirin8.0%12,963
6
Omeprazole7.9%12,852
7
Albuterol7.7%12,392
8
Atorvastatin-calcium6.8%11,049
9
Clonazepam6.4%10,348
10
Fluticasone6.2%9,976
11
Trazodone-hydrochloride6.1%9,838
12
Lisinopril5.7%9,293
13
Alprazolam5.5%8,930
14
Metformin5.5%8,850
15
Sertraline-hydrochloride5.1%8,307

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports bupropion side effects

63.9% of bupropion adverse event reports involve female patients and 26.2% involve male patients. The largest age group is adult at 79%. These figures reflect who reports side effects, not underlying risk.

Sex

Female63.9%
Male26.2%
Unknown9.8%

Age group

< 20.5%
2–110.5%
12–172.3%
18–6479.4%
65+17.3%

What is bupropion used for

Conditions and purposes for which patients were taking bupropion when the adverse event was reported.

Abdominal DiscomfortAbdominal PainAbdominal Pain UpperAbnormal BehaviourAbnormal Weight GainAccidental Drug Intake By ChildAccidental ExposureAccidental Exposure To ProductAccidental Exposure To Product By ChildAccidental OverdoseAcneAcute Stress DisorderAdhdAdjustment DisorderAdjustment Disorder With Depressed Mood

Showing 15 of 838 indications

Bupropion brand names and reporting trend

Bupropion is sold under brand names including Aplenzin, Forfivo Xl.

Brand names

Aplenzin529
Forfivo Xl21

Quarterly reports (20042025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking bupropion with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.