Drugs › Serotonin and norepinephrine reuptake inhibitor
Generic name
Desvenlafaxine succinate: adverse event reports filed with FDA
12,414 reports list it as a suspect or interacting product, 2008–2026. Class: Serotonin and norepinephrine reuptake inhibitor. Also reported as Desvenlafaxine Succinate Er, Desvenlafaxine Succinate Tab Er.
- 12,414
- reports as suspect product
- 0.1% of all reports · about 680 a year
- 59
- reports, 12 months to June 2026
- 87 in the 12 months before
- 29.6%
- marked serious by the reporter
- 66.4% across the class
- 1.4%
- record death among outcomes, as reported
- 168 reports · not verified by FDA
12,414 adverse event reports received by FDA list desvenlafaxine succinate, a generic name as a suspect or interacting product, from April 2008 to June 2026. A further 2,408 reports list it only as a concomitant medication, and those are not counted in the figures on this page.
In the 12 months to June 2026, 59 reports listed it, down 32% from 87 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 680 reports a year and 0.1% of the 20,646,523 reports in the database, and 7.3% of the reports for the serotonin and norepinephrine reuptake inhibitor class. How many people take it is not in the data, so a count is not a rate of occurrence.
The reactions recorded most often are drug ineffective (11.4%), nausea (11%) and dizziness (9.1%). A report can list several reactions, so shares add to more than 100%; 852 different terms appear across these reports. Drug ineffective is recorded in 11.4% of these reports, about the same share as in the median serotonin and norepinephrine reuptake inhibitor drug (10.4%).
29.6% of the reports are marked serious by the reporter (66.4% across the class); 1.4% record death among the outcomes and 6% record hospitalisation, as reported. 49.5% of the reports came from consumers, and the largest patient age group is 45 to 64 (15.2%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."
Reports by month, five years
Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.
By year received
2026 covers reports received through June 2026 only.
Reactions recorded in the reports
share of Desvenlafaxine succinate reports recording the termmedian drug in serotonin and norepinephrine reuptake inhibitor
- Drug ineffectivethe medicine did not work as expected11.4%1,421
- Nauseafeeling sick11%1,368
- Dizzinesslight-headedness or unsteadiness9.1%1,126
- Headachehead pain8.8%1,087
- Insomniadifficulty sleeping7.9%977
- Anxietyanxiety7.3%912
- Drug withdrawal syndromesymptoms on stopping a medicine6.9%855
- Feeling abnormalfeeling odd or not right6.3%787
- Fatiguetiredness6%743
- Depressionlow mood4.6%574
- Condition aggravatedthe condition being treated got worse4.3%538
- Medication residue4.3%533
- Hyperhidrosisexcessive sweating3.9%478
- Malaisegeneral feeling of being unwell3.7%460
- Diarrhoealoose or frequent stools3.5%433
- Somnolencedrowsiness3.2%403
- Cryingcrying3.1%382
- Tremorshaking3.1%380
- Suicidal ideationthoughts of suicide2.9%366
- Irritabilityirritability2.8%348
- Paraesthesiatingling or pins and needles2.6%327
- Weight increasedweight gain2.5%314
- Vomitingbeing sick2.4%298
- Decreased appetitereduced appetite2.4%294
- Blood pressure increaseda raised blood pressure reading2.3%288
- Constipationconstipation2.2%274
- Agitationrestlessness2.2%270
- Withdrawal syndrome2.2%268
- Astheniaweakness or lack of energy2.1%262
- Nervousnessnervousness2.1%262
Top 30 of 852 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 12 drugs in the serotonin and norepinephrine reuptake inhibitor class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."
Outcomes recorded
Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 171,115 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."
Patients and reporters
Patient age
Patient sex
Who reported
Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 94% of reports give the United States as the country of the event or reporter.
Reason for use recorded
| Indication as recorded (MedDRA) | Reports | Share |
|---|---|---|
| Depression | 5,062 | 40.8% |
| Anxiety | 779 | 6.3% |
| Major depression | 643 | 5.2% |
| Bipolar disorder | 94 | 0.8% |
| Bipolar i disorder | 31 | 0.2% |
| Fibromyalgia | 31 | 0.2% |
The indication field is filled in by the reporter and is often blank; shares are of all 12,414 reports.
Drugs most often listed in the same reports
| Drug (any role in the report) | Reports | Share of Desvenlafaxine succinate reports |
|---|---|---|
| Xanax | 493 | 4% |
| Synthroid | 352 | 2.8% |
| Klonopin | 343 | 2.8% |
| Bupropion hydrochloride | 292 | 2.4% |
| Lisinopril | 284 | 2.3% |
| Ambien | 253 | 2% |
| Clonazepam | 222 | 1.8% |
| Abilify | 218 | 1.8% |
| Lipitor | 214 | 1.7% |
| Nexium | 182 | 1.5% |
Other products listed in reports where Desvenlafaxine succinate is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.
In context
| Measure | Desvenlafaxine succinate | Serotonin and norepinephrine reuptake inhibitor | All reports |
|---|---|---|---|
| Reports as suspect product | 12,414 | 171,115 | 20,646,523 |
| Share of that pool | — | 7.3% | 0.1% |
| Reports, latest 12 months | 59 | — | 1,332,454 |
| Marked serious | 29.6% | 66.4% | 57.4% |
| Death recorded among outcomes, per 1,000 reports | 14 | 102 | 91 |
| Hospitalisation recorded, per 1,000 reports | 60 | 241 | 213 |
| Consumer-filed share | 49.5% | 41.4% | 45.8% |
| Top term, share of reports | Drug ineffective 11.4% | median 10.4% | 6.3% |
Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."
Other drugs in the serotonin and norepinephrine reuptake inhibitor class
| Drug | Name type | Reports | Latest 12 months | Marked serious |
|---|---|---|---|---|
| Cymbalta | brand | 52,279 | 346 | 52.3% |
| Venlafaxine | generic | 29,752 | 2,345 | 93.8% |
| Venlafaxine hydrochloride | generic | 19,464 | 1,026 | 80% |
| Duloxetine | generic | 16,103 | 1,529 | 85.5% |
| Effexor | brand | 13,079 | 36 | 60.1% |
| Venlafaxine hcl | generic | 8,401 | 15 | 67.3% |
| Duloxetine hydrochloride | generic | 8,245 | 787 | 82.5% |
| Pristiq | brand | 5,941 | 81 | 41.8% |
| Savella | brand | 2,909 | 34 | 29.4% |
| Desvenlafaxine | generic | 1,436 | 135 | 78.9% |
| Fetzima | brand | 1,092 | 75 | 53.1% |
Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.
Questions about Desvenlafaxine succinate reports
How many adverse event reports has FDA received for Desvenlafaxine succinate?
12,414 reports list Desvenlafaxine succinate as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 59 of them arrived in the latest 12 months. Another 2,408 list it only as a concomitant medication.
What reactions are recorded in Desvenlafaxine succinate reports?
drug ineffective (11.4%), nausea (11%), dizziness (9.1%), headache (8.8%) and insomnia (7.9%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Desvenlafaxine succinate was responsible.
How serious are the reports?
29.6% are marked serious by the reporter. Among the outcomes recorded, 1.4% of reports include death and 6% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.
Who files these reports?
consumer or non-health professional (49.5%), physician (21.2%) and other health professional (16.7%). Most reports reach FDA through the manufacturer, which must forward reports it receives.
Are reports for Desvenlafaxine succinate rising?
59 reports in the 12 months to June 2026, down 32% from 87 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.
Do these reports show that Desvenlafaxine succinate was responsible for these reactions?
No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.
Is this a list of the side effects of Desvenlafaxine succinate?
No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.
How do I report an adverse event?
Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Desvenlafaxine succinate as a suspect or interacting product; reports listing it only as a concomitant medication (2,408) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.