Reports received by FDA, by month

January 2016: adverse event reports received by FDA

97,585 drug reports (FAERS) and 59,558 device reports (MAUDE).

Read first · FDA's statement on these data

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product. openFDA, FDA

FDA adds: "There is no certainty that the reported event (adverse event or medication error) was actually due to the product. FDA does not require that a causal relationship between a product and event be proven, and reports do not always contain enough detail to properly evaluate an event." The information in these reports "cannot be used to estimate the incidence of these events."

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.

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

97,585
drug reports received: 66,622 a year earlier; 98,982
monthly average, preceding 12 months: -1.4% against the average; 59,558
device reports received: 73,153 a year earlier

FDA received 97,585 drug adverse event reports in January 2016, against 66,622 in the same month a year earlier and a monthly average of 98,982 over the preceding 12 months. The MAUDE device database received 59,558 reports that month (73,153 a year earlier).

The drugs listed most often as suspect products were Humira (19,718), Viekira Pak (4,143) and Enbrel (3,605), and the reactions recorded most often were drug ineffective (6,664), fatigue (4,748) and nausea (4,349).

Relative to their own average over the preceding 12 months, the drugs whose report count rose most were Rexulti (24× its average), Nicotine transdermal system patch (19.9× its average) and Repatha (13.1× its average). A jump in one month usually reflects a batch of reports from a manufacturer, a publicised event or a new product, not a change in what happens to patients.

Drug reports by month, three years to January 2016

Drugs listed most often as suspect products

Drug	Reports	Share of the month
Humira	19,718	20.2%
Viekira Pak	4,143	4.2%
Enbrel	3,605	3.7%
Revlimid	1,762	1.8%
Xarelto	1,438	1.5%
Dianeal Low Calcium Peritoneal Dialysis Solution with Dextrose	1,150	1.2%
Tecfidera	1,001	1%
Lyrica	973	1%
Otezla	951	1%
Remodulin	920	0.9%
Ribavirin	847	0.9%
Repatha	845	0.9%
Nicotine transdermal system patch	728	0.7%
Tyvaso	719	0.7%
Myrbetriq	716	0.7%

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."

Largest rises against their own average

Drug	Reports this month	Times its 12-month average
Rexulti	346	24×
Nicotine transdermal system patch	728	19.9×
Repatha	845	13.1×
Viekira Pak	4,143	11.9×
Duopa	186	11.4×
Kalbitor	248	10.7×
Saxenda	213	9.3×
Moderiba	326	7.7×

Drugs with at least 50 reports in the month and an average of at least 10 a month over the preceding year. A rise usually reflects a batch of manufacturer reports, a publicised event or a new product.

Reactions recorded most often

MedDRA term	Reports	Share of the month
Drug ineffectivethe medicine did not work as expected	6,664	6.8%
Fatiguetiredness	4,748	4.9%
Nauseafeeling sick	4,349	4.5%
Headachehead pain	4,106	4.2%
Deaththe patient died; cause not stated by this term	3,792	3.9%
Injection site painpain where the injection was given	3,774	3.9%
Diarrhoealoose or frequent stools	3,212	3.3%
Dyspnoeashortness of breath	2,682	2.7%
Dizzinesslight-headedness or unsteadiness	2,682	2.7%
Painpain, site not specified	2,648	2.7%
Malaisegeneral feeling of being unwell	2,592	2.7%
Drug dose omissiona dose was missed	2,556	2.6%
Off label useused for a purpose or in a way not on the label	2,350	2.4%
Vomitingbeing sick	2,221	2.3%
Arthralgiajoint pain	2,174	2.2%

Devices named most often

Brand	Reports	Share of device reports
Dexcom G5 Mobile Continuous Glucose Monitoring System	2,231	3.7%
Paradigm Real-Time Revel Insulin Infusion Pump	2,053	3.4%
Ot Verio Iq Meter	1,892	3.2%
Dexcom G4 Platinum Continuous Glucose Monitoring System	1,773	3%
Ot Verio2 Meter	1,636	2.7%
Animas Vibe	1,534	2.6%
Tandem T Slim Insulin Delivery System	1,378	2.3%
Onetouchping Glucosemgmtsystem	1,140	1.9%
530g Insulin Pump	1,112	1.9%
Paradigm Real-Time Insulin Infusion Pump	1,004	1.7%

Questions about January 2016

How many adverse event reports did FDA receive in January 2016?

97,585 drug reports are in the openFDA FAERS release of 28 Sep 2026, and 59,558 device reports in the MAUDE release of 28 Sep 2026. The same month a year earlier has 66,622 drug reports.

Which drugs were listed most often?

Humira (19,718), Viekira Pak (4,143), Enbrel (3,605), Revlimid (1,762) and Xarelto (1,438).

Which reactions were recorded most often?

drug ineffective (6,664), fatigue (4,748), nausea (4,349), headache (4,106) and death (3,792).

Can the count for a month still change?

Yes. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Older months change little.

Does a busy month mean something happened that month?

Not by itself. The date is when FDA received the report, not when the event occurred, and volume follows manufacturer batches, product launches and publicity. 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."

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. 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.