Novolog: adverse event reports filed with FDA

14,477

reports as suspect product

0.1% of all reports · about 644 a year

1,576

reports, 12 months to June 2026

853 in the 12 months before

61.8%

marked serious by the reporter

42.7% across the class

2.9%

record death among outcomes, as reported

414 reports · not verified by FDA

Reports by month, five years

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Novolog reports recording the termmedian drug in insulin analog

1. Blood glucose increasedraised blood sugar reading30%4,342
2. Blood glucose decreasedlow blood sugar reading9.5%1,377
3. Product quality issuea problem with the product itself6.1%878
4. Drug ineffectivethe medicine did not work as expected5.7%831
5. Visual impairmentreduced vision3.7%539
6. Diabetic ketoacidosisa serious complication of diabetes with acid build-up3.7%538
7. Glycosylated haemoglobin increaseda raised HbA1c, the long-term sugar measure3.3%475
8. Hypoglycaemialow blood sugar3%433
9. Malaisegeneral feeling of being unwell2.7%393
10. Cerebrovascular accidentstroke2.6%372
11. Blood glucose fluctuation2.5%369
12. Diabetes mellitus inadequate controldiabetes not well controlled2.5%367
13. Falla fall2.5%367
14. Weight increasedweight gain2.5%360
15. Dizzinesslight-headedness or unsteadiness2.3%330
16. Nauseafeeling sick2.2%318
17. Device malfunctionthe device did not work properly2%288
18. Weight decreasedweight loss1.9%273
19. Hypoglycaemic unconsciousnesspassing out from low blood sugar1.9%270
20. Headachehead pain1.9%269
21. Fatiguetiredness1.8%258
22. Neuropathy peripheralnerve damage in hands or feet1.8%255
23. Vomitingbeing sick1.8%255
24. Hospitalisationadmission to hospital1.8%254
25. Dyspnoeashortness of breath1.7%252
26. Myocardial infarctionheart attack1.7%240
27. Blindnessloss of sight1.6%228
28. Cataractclouding of the eye lens1.5%210
29. Deaththe patient died; cause not stated by this term1.4%197
30. Condition aggravatedthe condition being treated got worse1.4%196

Top 30 of 1,052 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 26 drugs in the insulin analog class; it describes the reports, not the patients. 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."

Outcomes recorded

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 289,293 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 98.6% of reports give the United States as the country of the event or reporter.

Reason for use recorded

The indication field is filled in by the reporter and is often blank; shares are of all 14,477 reports.

Drugs most often listed in the same reports

Other products listed in reports where Novolog is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. 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."

Other drugs in the insulin analog class

Ordered by report count for navigation only. 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." A brand and its generic are separate rows because reporters name them separately.

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. A report counts here when it lists Novolog as a suspect or interacting product; reports listing it only as a concomitant medication (36,845) are excluded. 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.