Drug Safety Information for INTUNIV (Guanfacine hydrochloride)

FDA Safety-related Labeling Changes for INTUNIV (GUANFACINE HYDROCHLORIDE) Rx Drug: Safety Information Link

Adverse Drug Reactions for INTUNIV* (Guanfacine hydrochloride)

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 INTUNIV
(reported in FDA Medwatch/FAERS Reports)

  Side Effect # of FDA Reports
1Product quality issue162
2Drug ineffective152
3Aggression*136
4Fatigue*119
5Off label use118
6Somnolence*113
7Syncope110
8Dizziness95
9Abnormal behaviour93
10Convulsion91
11Wrong technique in drug usage process91
12Weight increased83
13Insomnia*75
14Headache69
15Vomiting68
16Hypotension65
17Anxiety*64
18Suicidal ideation63
19Agitation63
20Nausea62

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

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

Reason # of FDA Reports
1Attention deficit/hyperactivity disorder*2130
2Product used for unknown indication956
3Hypertension305
4Tic89
5Impulsive behaviour73
6Disturbance in attention47
7Tourette's disorder44
8Psychomotor hyperactivity36
9Impulse-control disorder35
10Aggression33

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


Types of Adverse Events for INTUNIV

Total Reports Filed with FDA: 8382


Number of FDA Adverse Event Reports by Patient Age for INTUNIV

Total Reports Filed with FDA: 8382*


* Reports for drugs with the same active ingredients have been aggregated in this analysis: Guanfacine hydrochloride (Intuniv, Estulic, Tenex, Guanfacine)

Charts are based on 8382 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 INTUNIV 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.