Drug Safety Information for RELENZA (Zanamivir)

Safety-related Labeling Changes for RELENZA (ZANAMIVIR) Rx Drug: FDA Link

Adverse Drug Reactions for RELENZA* (Zanamivir)

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 RELENZA
(reported in FDA Medwatch/FAERS Reports)

  Side Effect # of FDA Reports
1Overdose394
2Abnormal behaviour389
3Hallucination160
4Exposure during breast feeding124
5Delirium119
6Loss of consciousness95
7Pyrexia84
8Death60
9Depressed level of consciousness59
10Convulsion59
11Aggression57
12Altered state of consciousness54
13Dyspnoea54
14Restlessness49
15Vomiting49
16Agitation47
17Fall45
18Amnesia43
19Cough39
20Nausea38

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

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

Reason # of FDA Reports
1Influenza3496
2Product used for unknown indication883
3H1n1 influenza410
4Antiviral prophylaxis105
5Influenza like illness34
6Prophylaxis28
7Pyrexia13
8Viral infection10
9Asthma8
10Septic shock6

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


Types of Adverse Events for RELENZA

Total Reports Filed with FDA: 5744


Number of FDA Adverse Event Reports by Patient Age for RELENZA

Total Reports Filed with FDA: 5744*


* Reports for drugs with the same active ingredients have been aggregated in this analysis: Zanamivir (Relenza)

Charts are based on 5744 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 RELENZA Reviews and Review Summary .

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.

Visit   DrugInformer.com more on RELENZA's side effects.