Drug Safety Information for NORPACE (Disopyramide phosphate)

Adverse Drug Reactions for NORPACE* (Disopyramide phosphate)

These charts and graphs are based on reports received through the FDA Adverse Event Reporting System (FAERS) program (see below).

Top 20 Adverse Effects Associated with NORPACE
(reported in FDA Medwatch/FAERS Reports)

  Side Effect # of FDA Reports
1Drug ineffective*72
2Atrial fibrillation61
3Drug interaction46
4Electrocardiogram qt prolonged44
5Dyspnoea40
6Malaise40
7Dizziness38
8Loss of consciousness36
9Torsade de pointes34
10Asthenia33
11Palpitations31
12Hypoglycaemia31
13Decreased appetite31
14Ventricular tachycardia30
15Constipation*27
16Nausea26
17Bradycardia25
18Fatigue24
19Arrhythmia22
20Headache22

* This side effect also appears in "Top 10 Side Effects of NORPACE " in the drug's Review Summary based on AskaPatient reviews.

Top 10 Reasons for Taking NORPACE
(associated with FDA Medwatch/FAERS Reports)

Reason # of FDA Reports
1Atrial fibrillation504
2Arrhythmia317
3Product used for unknown indication236
4Ill-defined disorder63
5Cardiac disorder58
6Heart rate irregular54
7Hypertension48
8Ventricular extrasystoles47
9Supraventricular tachycardia36
10Syncope33

*Also a top-10 reason in AskaPatient Review Summary.


Types of Adverse Events for NORPACE

Total Reports Filed with FDA: 3674


Number of FDA Adverse Event Reports by Patient Age for NORPACE

Total Reports Filed with FDA: 3674*


* Reports for drugs with the same active ingredients have been aggregated in this analysis: Disopyramide phosphate (Rhythmodan, Disopyramide, Norpace, Norpace cr)

Charts are based on 3674 reports filed with the FDA between 2004 and June 2015.

Adverse Event Reports are submitted to the FDA by pharmaceutical companies (mandatory reporting is required by manufacturers, distributors, or importers), health care providers such as doctors (voluntary reporting), and by patients themselves (voluntary reporting). More Information on FDA MedWatch (FDA Safety Information and Adverse Event Reporting Program)Voluntary reporting takes place under the FDA's MedWatch program, where health care professionals and consumers submit reports to FDA when they find a problem with a drug, medical device, biologic, or other FDA-regulated product. An adverse event is any undesirable experience or extreme side effect associated with the use of a medical product. Adverse events include: death, life threatening event, hospitalization, disability or permanent damage, congenital anomaly or birth defect, medical product use requiring a surgical or other intervention, or other serious medical situation believed to be caused by the drug.

Click to go back to search results and NORPACE Reviews and Review Summary .

Historical Analytics of FDA Adverse Event Reports Provided by Druginformer.com. FDA Drug Safety Information, including safety-related labeling updates, required post-approval safety studies, risk evaluation management strategies (REMS), alerts, and recalls are compiled by AskaPatient.com from the U.S. Food and Drug Administration.