Generic name
Propafenone: adverse event reports filed with FDA
1,266 reports list it as a suspect or interacting product, 2005–2026. Class: Antiarrhythmic. Also reported as Propafenone Tablet.
- 1,266
- reports as suspect product
- 0% of all reports · about 60 a year
- 56
- reports, 12 months to June 2026
- 62 in the 12 months before
- 92.5%
- marked serious by the reporter
- 73.5% across the class
- 15.6%
- record death among outcomes, as reported
- 197 reports · not verified by FDA
1,266 adverse event reports received by FDA list propafenone, a generic name as a suspect or interacting product, from April 2005 to June 2026. A further 2,239 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, 56 reports listed it, down 10% from 62 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 60 reports a year and 0% of the 20,646,523 reports in the database, and 4.1% of the reports for the antiarrhythmic 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 interaction (18%), toxicity to various agents (15.9%) and drug ineffective (11.9%). A report can list several reactions, so shares add to more than 100%; 492 different terms appear across these reports. Drug interaction is recorded in 18% of these reports, a larger share than in the median antiarrhythmic drug (6.7%).
92.5% of the reports are marked serious by the reporter (73.5% across the class); 15.6% record death among the outcomes and 48.4% record hospitalisation, as reported. 43.7% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (21.2%). 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 Propafenone reports recording the termmedian drug in antiarrhythmic
- Drug interactionan interaction between medicines18%228
- Toxicity to various agentspoisoning or toxic effect of one or more substances15.9%201
- Drug ineffectivethe medicine did not work as expected11.9%151
- Bradycardiaslow heart rate10.7%136
- Dizzinesslight-headedness or unsteadiness8.5%108
- Atrial fibrillationan irregular heart rhythm8.2%104
- Hypotensionlow blood pressure7.8%99
- Cardiac arrestthe heart stopped7.6%96
- Completed suicidedeath by suicide6.9%87
- Arrhythmia5.1%64
- Dyspnoeashortness of breath4.7%60
- Acute kidney injurysudden loss of kidney function4.7%59
- Fatiguetiredness4.5%57
- Syncopefainting4.5%57
- Intentional overdosea deliberate overdose4.4%56
- Loss of consciousnesspassing out4.3%54
- Overdosea dose above the recommended amount4.2%53
- Astheniaweakness or lack of energy3.9%49
- Seizurea fit or convulsion3.8%48
- Electrocardiogram QT prolongeda QT prolongation on the ECG3.6%46
- Nauseafeeling sick3.6%45
- Off label useused for a purpose or in a way not on the label3.5%44
- Metabolic acidosistoo much acid in the body fluids3.2%41
- Ventricular tachycardiaa fast rhythm from the lower heart chambers3.2%41
- Sinus bradycardia3.2%40
- Palpitationsawareness of the heartbeat3.1%39
- Drug level increaseda raised blood level of the medicine2.9%37
- Suicide attempta suicide attempt2.7%34
Top 30 of 492 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 11 drugs in the antiarrhythmic 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 30,807 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. 34% of reports give the United States as the country of the event or reporter.
Reason for use recorded
| Indication as recorded (MedDRA) | Reports | Share |
|---|---|---|
| Atrial fibrillation | 326 | 25.8% |
| Arrhythmia | 54 | 4.3% |
| Supraventricular tachycardia | 25 | 2% |
| Palpitations | 19 | 1.5% |
| Cardiovascular disorder | 18 | 1.4% |
| Hypertension | 16 | 1.3% |
The indication field is filled in by the reporter and is often blank; shares are of all 1,266 reports.
In context
| Measure | Propafenone | Antiarrhythmic | All reports |
|---|---|---|---|
| Reports as suspect product | 1,266 | 30,807 | 20,646,523 |
| Share of that pool | — | 4.1% | 0% |
| Reports, latest 12 months | 56 | — | 1,332,454 |
| Marked serious | 92.5% | 73.5% | 57.4% |
| Death recorded among outcomes, per 1,000 reports | 156 | 101 | 91 |
| Hospitalisation recorded, per 1,000 reports | 484 | 339 | 213 |
| Consumer-filed share | 14.1% | 36.5% | 45.8% |
| Top term, share of reports | Drug interaction 18% | median 6.7% | 0.8% |
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 antiarrhythmic class
| Drug | Name type | Reports | Latest 12 months | Marked serious |
|---|---|---|---|---|
| Tikosyn | brand | 6,193 | 30 | 57.5% |
| Multaq | brand | 5,773 | 289 | 70.9% |
| Amiodarone hydrochloride | generic | 5,286 | 382 | 92.7% |
| Sotalol | brand | 3,168 | 127 | 91.9% |
| Nuedexta | brand | 2,517 | 155 | 26.1% |
| Dofetilide | generic | 1,728 | 34 | 64.4% |
| Sotalol hydrochloride | generic | 1,641 | 57 | 87.9% |
| Flecainide acetate | generic | 1,447 | 78 | 87.6% |
| Propafenone hydrochloride | generic | 1,071 | 18 | 80.4% |
| Dronedarone | generic | 717 | 33 | 92.6% |
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 Propafenone reports
How many adverse event reports has FDA received for Propafenone?
1,266 reports list Propafenone as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 56 of them arrived in the latest 12 months. Another 2,239 list it only as a concomitant medication.
What reactions are recorded in Propafenone reports?
drug interaction (18%), toxicity to various agents (15.9%), drug ineffective (11.9%), bradycardia (10.7%) and electrocardiogram QRS complex prolonged (8.8%). 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 Propafenone was responsible.
How serious are the reports?
92.5% are marked serious by the reporter. Among the outcomes recorded, 15.6% of reports include death and 48.4% 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?
other health professional (43.7%), physician (34.6%) and consumer or non-health professional (14.1%). Most reports reach FDA through the manufacturer, which must forward reports it receives.
Are reports for Propafenone rising?
56 reports in the 12 months to June 2026, down 10% from 62 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 Propafenone 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 Propafenone?
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 Propafenone as a suspect or interacting product; reports listing it only as a concomitant medication (2,239) 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.