Reported Reactions

Drugs › Insulin

Brand name · Human insulin

Novolin 70/30: adverse event reports filed with FDA

1,388 reports list it as a suspect or interacting product, 2004–2026. Class: Insulin.

1,388
reports as suspect product
0% of all reports · about 62 a year
109
reports, 12 months to June 2026
157 in the 12 months before
60%
marked serious by the reporter
56.4% across the class
2.8%
record death among outcomes, as reported
39 reports · not verified by FDA

1,388 adverse event reports received by FDA list the brand name Novolin 70/30 (human insulin) as a suspect or interacting product, from January 2004 to June 2026. A further 1,413 reports list it only as a concomitant medication, and those are not counted in the figures on this page.

In the 12 months to June 2026, 109 reports listed it, down 31% from 157 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 62 reports a year and 0% of the 20,646,523 reports in the database, and 3.8% of the reports for the insulin class. How many people take it is not in the data, so a count is not a rate of occurrence.

The MedDRA terms listed most often are blood glucose increased (25.4%), blood glucose decreased (10.9%) and product quality issue (4.9%). A report can list several reactions, so shares add to more than 100%; 248 different terms appear across these reports. Blood glucose increased is recorded in 25.4% of these reports, about the same share as in the median insulin drug (25.6%).

60% of the reports are marked serious by the reporter (56.4% across the class); 2.8% record death among the outcomes and 27.1% record hospitalisation, as reported. 84.8% of the reports came from consumers, and the largest patient age group is 45 to 64 (18.2%). 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."

Reports by month, five years

03570Jul 2021: 14Aug 2021: 9Sep 2021: 6Oct 2021: 3Nov 2021: 9Dec 2021: 652022Jan 2022: 1Feb 2022: 5Mar 2022: 2Apr 2022: 2May 2022: 4Jun 2022: 3Jul 2022: 10Aug 2022: 1Sep 2022: 3Oct 2022: 2Nov 2022: 9Dec 2022: 512023Jan 2023: 2Feb 2023: 1Mar 2023: 8Apr 2023: 2May 2023: 3Jun 2023: 2Jul 2023: 1Aug 2023: 1Sep 2023: 0Oct 2023: 0Nov 2023: 2Dec 2023: 252024Jan 2024: 3Feb 2024: 5Mar 2024: 5Apr 2024: 1May 2024: 3Jun 2024: 6Jul 2024: 12Aug 2024: 12Sep 2024: 4Oct 2024: 6Nov 2024: 11Dec 2024: 702025Jan 2025: 11Feb 2025: 12Mar 2025: 6Apr 2025: 1May 2025: 9Jun 2025: 3Jul 2025: 8Aug 2025: 3Sep 2025: 1Oct 2025: 5Nov 2025: 17Dec 2025: 432026Jan 2026: 7Feb 2026: 2Mar 2026: 3Apr 2026: 15May 2026: 1Jun 2026: 4

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

0791582004: 1820042005: 262006: 272007: 2020072008: 102009: 342010: 5120102011: 252012: 272013: 1720132014: 182015: 552016: 7820162017: 762018: 812019: 9320192020: 1582021: 1452022: 9320222023: 472024: 1382025: 11920252026: 32

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Novolin 70/30 reports recording the termmedian drug in insulin

  1. Blood glucose increasedraised blood sugar reading25.4%353
  2. Blood glucose decreasedlow blood sugar reading10.9%151
  3. Product quality issuea problem with the product itself4.9%68
  4. Drug ineffectivethe medicine did not work as expected4.2%58
  5. Dizzinesslight-headedness or unsteadiness4.1%57
  6. Visual impairmentreduced vision3.2%44
  7. Malaisegeneral feeling of being unwell3.1%43
  8. Hypoglycaemic unconsciousnesspassing out from low blood sugar3%41
  9. Glycosylated haemoglobin increaseda raised HbA1c, the long-term sugar measure2.7%38
  10. Nauseafeeling sick2.6%36
  11. Falla fall2.4%34
  12. Headachehead pain2.4%34
  13. Weight increasedweight gain2.4%34
  14. Diabetes mellitus inadequate controldiabetes not well controlled2.4%33
  15. Vision blurredblurred vision2.2%31
  16. Myocardial infarctionheart attack2.1%29
  17. Peripheral swellingswelling of the arms or legs1.9%27
  18. Astheniaweakness or lack of energy1.9%26
  19. Diarrhoealoose or frequent stools1.7%24
  20. Hospitalisationadmission to hospital1.7%24
  21. Hypoglycaemialow blood sugar1.7%24
  22. Medication errora mistake in prescribing, dispensing or taking a medicine1.7%24
  23. Dyspnoeashortness of breath1.6%22
  24. Weight decreasedweight loss1.5%21
  25. Condition aggravatedthe condition being treated got worse1.4%19
  26. Feeling abnormalfeeling odd or not right1.3%18
  27. Neuropathy peripheralnerve damage in hands or feet1.3%18
  28. Deaththe patient died; cause not stated by this term1.2%17

Top 30 of 248 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 9 drugs in the insulin 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

Death2.8%39
Life-threatening3.9%54
Hospitalisation (initial or prolonged)27.1%376
Disability2.7%37
Congenital anomaly0.1%1
Other serious35.5%493
Not serious40%555

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 36,121 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

Patient age

Under 20%0
2 to 110.1%1
12 to 170%0
18 to 444.4%61
45 to 6418.2%252
65 to 7417.4%241
75 and over13.1%182
Age not given46.9%651

Patient sex

Female51.3%712
Male44%611
Not given4.7%65

Who reported

Physician5.2%72
Pharmacist5.3%73
Other health professional3.1%43
Lawyer0%0
Consumer or non-health professional84.8%1,177
Not given1.7%23

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 97.3% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Type 2 diabetes mellitus44131.8%
Diabetes mellitus20414.7%
Type 1 diabetes mellitus795.7%
Insulin-requiring type ii diabetes mellitus342.4%
Insulin-requiring type 2 diabetes mellitus302.2%
Diabetes mellitus insulin-dependent80.6%

The indication field is filled in by the reporter and is often blank; shares are of all 1,388 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Novolin 70/30 reports
Novolin R735.3%
Metformin664.8%
Novolog594.3%
NovoLog Mix 70/30463.3%
Novolin N392.8%
Lisinopril342.4%
Ozempic342.4%
Aspirin332.4%
Levemir271.9%
Lantus251.8%

Other products listed in reports where Novolin 70/30 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

MeasureNovolin 70/30InsulinAll reports
Reports as suspect product1,38836,12120,646,523
Share of that pool—3.8%0%
Reports, latest 12 months109—1,332,454
Marked serious60%56.4%57.4%
Death recorded among outcomes, per 1,000 reports283591
Hospitalisation recorded, per 1,000 reports271291213
Consumer-filed share84.8%79.1%45.8%
Top term, share of reportsBlood glucose increased 25.4%median 25.6%0.9%

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 class

DrugName typeReportsLatest 12 monthsMarked serious
Humulin Nbrand10,91415252.1%
Humulin Rbrand8,36221560.2%
Humulin 70/30brand6,87013249.7%
Insulin humangeneric3,41818670.9%
Novolin Nbrand1,68010671.7%
Novolin Rbrand1,63716476.8%
Afrezzabrand1,216697.2%
Human insulingeneric636068.2%

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.

Questions about Novolin 70/30 reports

How many adverse event reports has FDA received for Novolin 70/30?

1,388 reports list Novolin 70/30 as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 109 of them arrived in the latest 12 months. Another 1,413 list it only as a concomitant medication.

What reactions are recorded in Novolin 70/30 reports?

blood glucose increased (25.4%), blood glucose decreased (10.9%), product quality issue (4.9%), drug ineffective (4.2%) and dizziness (4.1%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Novolin 70/30 was responsible.

How serious are the reports?

60% are marked serious by the reporter. Among the outcomes recorded, 2.8% of reports include death and 27.1% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

consumer or non-health professional (84.8%), pharmacist (5.3%) and physician (5.2%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Novolin 70/30 rising?

109 reports in the 12 months to June 2026, down 31% from 157 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Novolin 70/30 was responsible for these reactions?

No. 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." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Novolin 70/30?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

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 Novolin 70/30 as a suspect or interacting product; reports listing it only as a concomitant medication (1,413) 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.

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