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Esketamine Side Effects

The most commonly reported side effects of esketamine include dissociation, sedation, and suicidal ideation, based on 15,941 FDA adverse event reports from 2004 to 2025. 6.5% of reports found the drug to be ineffective.

Esketamine side effects

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

1
Dissociation21.0%3,353
2
Sedation15.5%2,466
3
Suicidal Ideation7.7%1,231
4
Drug Ineffective6.5%1,044
5
Nausea5.5%879
6
Depression5.1%809
7
Product Dose Omission Issue4.4%709
8
Hospitalisation4.4%702
9
Hypertension4.3%692
10
Anxiety4.3%682
11
Vomiting4.1%650
12
Dizziness3.8%598
13
Blood Pressure Increased3.3%519
14
Feeling Abnormal2.9%457
15
Off Label Use2.3%366

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

Report severity

69.3%Serious11,050 reports
17.4%Hospitalizations2,771 reports
4.2%Fatal671 reports

Seriousness is determined by the reporter, not by OpenClaim.

Esketamine drug interactions

Other drugs that appear in adverse event reports alongside esketamine. 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
Bupropion0.4%59
2
Sodium-oxybate0.3%48
3
Lamotrigine0.3%46
4
Quetiapine-fumarate0.3%44
5
Venlafaxine0.2%35
6
Clonazepam0.2%30
7
Lorazepam0.2%30
8
Olanzapine0.2%29
9
Alprazolam0.2%29
10
Dextromethorphan0.2%29
11
Ketamine-hydrochloride0.2%27
12
Lithium0.2%25
13
Duloxetine-hydrochloride0.2%24
14
Midazolam0.1%23
15
Diazepam0.1%22

Taken alongside

1
Clonazepam3.8%608
2
Bupropion3.5%560
3
Dextroamphetamine3.1%496
4
Amphetamine3.0%471
5
Alprazolam2.7%431
6
Trazodone-hydrochloride2.6%418
7
Lamotrigine2.3%360
8
Lorazepam2.2%356
9
Quetiapine-fumarate2.1%327
10
Venlafaxine2.0%317
11
Gabapentin2.0%315
12
Duloxetine-hydrochloride1.9%304
13
Lisdexamfetamine-dimesylate1.7%270
14
Fluoxetine-hydrochloride1.6%253
15
Buspirone-hydrochloride1.5%233

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 esketamine side effects

55.8% of esketamine adverse event reports involve female patients and 28.8% involve male patients. The largest age group is adult at 86%. These figures reflect who reports side effects, not underlying risk.

Sex

Female55.8%
Male28.8%
Unknown15.4%

Age group

< 2<0.1%
2–11<0.1%
12–170.1%
18–6485.5%
65+14.2%

What is esketamine used for

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

AkathisiaAnaesthesiaAnaesthesia ProcedureAnalgesic TherapyAnkylosing SpondylitisAnxietyAnxiety DisorderAbdominal PainAffective DisorderAgoraphobiaAlcoholismAnaesthesiaAngerAnhedoniaAnxiety

Showing 15 of 116 indications

Esketamine brand names and reporting trend

Esketamine is sold under the brand name Spravato.

Brand names

Spravato142

Quarterly reports (20042025)

2004201020202025

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

Taking esketamine with another medication?

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