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Vilazodone Side Effects

The most commonly reported side effects of vilazodone include off label use, diarrhoea, and nausea, based on 10,420 FDA adverse event reports from 2011 to 2025. 5.8% of reports found the drug to be ineffective.

Vilazodone side effects

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

1
Off Label Use10.8%1,128
2
Diarrhoea7.4%767
3
Nausea7.2%748
4
Anxiety6.1%639
5
Drug Ineffective5.8%608
6
Insomnia5.6%580
7
Headache5.2%546
8
Depression4.7%492
9
Fatigue4.6%481
10
Dizziness4.5%472
11
Feeling Abnormal3.9%402
12
Suicidal Ideation3.4%351
13
Weight Increased2.9%299
14
Paraesthesia2.8%287
15
Vomiting2.6%274

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

Report severity

39.8%Serious4,143 reports
11.9%Hospitalizations1,237 reports
3.2%Fatal336 reports

Seriousness is determined by the reporter, not by OpenClaim.

Vilazodone drug interactions

Other drugs that appear in adverse event reports alongside vilazodone. 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
Sodium-oxybate8.6%893
2
Adalimumab2.0%207
3
Quetiapine-fumarate2.0%204
4
Aripiprazole1.9%201
5
Bupropion1.7%176
6
Dupilumab1.4%148
7
Brexpiprazole1.3%135
8
Alprazolam1.2%125
9
Lamotrigine1.1%116
10
Venlafaxine1.0%108
11
Trazodone-hydrochloride1.0%104
12
Esketamine-hydrochloride1.0%102
13
Acetaminophen0.9%98
14
Duloxetine-hydrochloride0.9%92
15
Fluoxetine-hydrochloride0.9%91

Taken alongside

1
Ergocalciferol10.7%1,111
2
Levothyroxine-sodium9.9%1,029
3
Acetaminophen9.1%949
4
Alprazolam8.8%922
5
Clonazepam8.8%916
6
Gabapentin8.4%871
7
Bupropion8.0%832
8
Omeprazole7.7%800
9
Albuterol6.3%655
10
Trazodone-hydrochloride6.1%635
11
Aspirin5.9%619
12
Fluticasone5.9%611
13
Dextroamphetamine5.8%604
14
Lisinopril5.6%583
15
Amphetamine5.4%567

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 vilazodone side effects

67.1% of vilazodone adverse event reports involve female patients and 26.2% involve male patients. The largest age group is adult at 77%. These figures reflect who reports side effects, not underlying risk.

Sex

Female67.1%
Male26.2%
Unknown6.7%

Age group

< 20.2%
2–110.3%
12–175.4%
18–6477.3%
65+16.7%

What is vilazodone used for

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

Abnormal BehaviourAbnormal DreamsAccidental Exposure To ProductAccidental Exposure To Product By ChildAdjustment DisorderAdjustment Disorder With Depressed MoodAdjuvant TherapyAffective DisorderAggressionAgitationAlopecia AreataAmnesiaAngerAntidepressant TherapyAnxiety

Showing 15 of 176 indications

Vilazodone brand names and reporting trend

Quarterly reports (20112025)

20122016202020242025

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

Taking vilazodone with another medication?

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