Reported Reactions

Drugs Classes Devices Reactions Months Guides

Guides

What FAERS and MAUDE are, and their limits in FDA's own words
Reading a reaction list: MedDRA terms, shares and class medians
Why report counts rise and fall for reasons unrelated to patients
How to report an adverse event or device problem to FDA

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.

Data: openFDA Drug Adverse Event (FAERS) bulk export, U.S. Food and Drug Administration (CC0 1.0, public domain); openFDA Device Adverse Event (MAUDE) bulk export, FDA (CC0 1.0, public domain); openFDA National Drug Code Directory, FDA (CC0 1.0, public domain); openFDA Device Classification, FDA (CC0 1.0, public domain). Data through 30 Jun 2026. Sources and licences · Methodology · Corrections · Contact · About

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Reported Reactions publishes statistics derived from public records for general information. It is not medical, legal or financial advice. It counts the adverse event reports FDA has received for each drug and medical device, shows the reactions, outcomes, patients and reporters recorded in them and their monthly trend, and states FDA's own limitations on every page.