Reported Reactions

Drugs › Insulin analog

Brand name · Insulin lispro

Humalog Mix75/25: adverse event reports filed with FDA

8,139 reports list it as a suspect or interacting product, 2009–2026. Class: Insulin analog.

8,139
reports as suspect product
0% of all reports · about 472 a year
140
reports, 12 months to June 2026
185 in the 12 months before
23.8%
marked serious by the reporter
42.7% across the class
1.2%
record death among outcomes, as reported
97 reports · not verified by FDA

Between April 2009 and June 2026, 8,139 adverse event reports received by FDA list the brand name Humalog Mix75/25 (insulin lispro) as a suspect or interacting product. Reports that mention it only as a concomitant medication (290) are left out of every figure here.

In the 12 months to June 2026, 140 reports listed it, down 24% from 185 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 472 reports a year and 0% of the 20,646,523 reports in the database, and 2.8% of the reports for the insulin analog class. How many people take it is not in the data, so a count is not a rate of occurrence.

The reactions recorded most often are blood glucose increased (31%), incorrect dose administered (9.9%) and blood glucose decreased (7.3%). A report can list several reactions, so shares add to more than 100%; 556 different terms appear across these reports. Blood glucose increased is recorded in 31% of these reports, a larger share than in the median insulin analog drug (23%).

23.8% of the reports are marked serious by the reporter (42.7% across the class); 1.2% record death among the outcomes and 11.8% record hospitalisation, as reported. 93.7% of the reports came from consumers, and the largest patient age group is 65 to 74 (11.2%). 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

01938Jul 2021: 38Aug 2021: 30Sep 2021: 23Oct 2021: 37Nov 2021: 33Dec 2021: 272022Jan 2022: 31Feb 2022: 28Mar 2022: 29Apr 2022: 16May 2022: 22Jun 2022: 34Jul 2022: 30Aug 2022: 26Sep 2022: 28Oct 2022: 22Nov 2022: 13Dec 2022: 152023Jan 2023: 8Feb 2023: 29Mar 2023: 19Apr 2023: 19May 2023: 26Jun 2023: 25Jul 2023: 19Aug 2023: 25Sep 2023: 23Oct 2023: 23Nov 2023: 13Dec 2023: 202024Jan 2024: 15Feb 2024: 15Mar 2024: 18Apr 2024: 23May 2024: 15Jun 2024: 9Jul 2024: 16Aug 2024: 12Sep 2024: 21Oct 2024: 14Nov 2024: 19Dec 2024: 102025Jan 2025: 18Feb 2025: 15Mar 2025: 19Apr 2025: 11May 2025: 12Jun 2025: 18Jul 2025: 15Aug 2025: 13Sep 2025: 16Oct 2025: 11Nov 2025: 7Dec 2025: 122026Jan 2026: 9Feb 2026: 10Mar 2026: 11Apr 2026: 11May 2026: 12Jun 2026: 13

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

01,8113,6212009: 220092010: 12011: 120112012: 42013: 120132014: 122015: 3,62120152016: 7852017: 68120172018: 5782019: 56520192020: 5022021: 42320212022: 2942023: 24920232024: 1872025: 16720252026: 66

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Humalog Mix75/25 reports recording the termmedian drug in insulin analog

  1. Blood glucose increasedraised blood sugar reading31%2,523
  2. Incorrect dose administeredthe wrong dose was given9.9%807
  3. Blood glucose decreasedlow blood sugar reading7.3%591
  4. Drug dispensing errora dispensing mistake6.7%544
  5. Visual impairmentreduced vision6.6%537
  6. Drug ineffectivethe medicine did not work as expected5.5%450
  7. Drug dose omissiona dose was missed5%408
  8. Underdoseless than the intended dose4.5%369
  9. Wrong drug administeredthe wrong medicine was given4.4%357
  10. Malaisegeneral feeling of being unwell3.2%264
  11. Injection site painpain where the injection was given3.2%257
  12. Cataractclouding of the eye lens2.9%239
  13. Glycosylated haemoglobin increaseda raised HbA1c, the long-term sugar measure2.8%228
  14. Visual acuity reducedreduced sharpness of vision2.4%196
  15. Wrong technique in product usage processthe product was used in the wrong way2.4%193
  16. Dizzinesslight-headedness or unsteadiness2.2%175
  17. Hypoglycaemialow blood sugar2.1%174
  18. Falla fall2.1%167
  19. Feeling abnormalfeeling odd or not right2%165
  20. Hypoacusisreduced hearing2%161
  21. Memory impairmentmemory problems1.9%154
  22. Incorrect product storagethe product was stored wrongly1.8%144
  23. Intercepted drug dispensing error1.8%144
  24. Tremorshaking1.7%135
  25. Intercepted product selection error1.6%132
  26. Arthritis1.6%131
  27. Weight increasedweight gain1.6%131
  28. Astheniaweakness or lack of energy1.5%122

Top 30 of 556 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

Death1.2%97
Life-threatening0.5%39
Hospitalisation (initial or prolonged)11.8%961
Disability0.8%65
Congenital anomaly0%1
Other serious13.5%1,098
Not serious76.2%6,200

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

Patient age

Under 20%2
2 to 110%4
12 to 170.1%10
18 to 441.5%124
45 to 6411.1%901
65 to 7411.2%912
75 and over11.2%912
Age not given64.8%5,274

Patient sex

Female58.3%4,744
Male39.4%3,206
Not given2.3%189

Who reported

Physician1.6%129
Pharmacist2.7%222
Other health professional1.9%157
Lawyer0%1
Consumer or non-health professional93.7%7,625
Not given0.1%5

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 89.8% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Diabetes mellitus1,98324.4%
Type 2 diabetes mellitus1,72221.2%
Type 1 diabetes mellitus1832.2%
Blood glucose increased190.2%
Insulin-requiring type 2 diabetes mellitus80.1%
Gestational diabetes70.1%

The indication field is filled in by the reporter and is often blank; shares are of all 8,139 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Humalog Mix75/25 reports
Humalog1,49118.3%
Metformin8089.9%
Lantus4715.8%
Humulin 70/301812.2%
Levemir1541.9%
Insulin lispro1531.9%
Trulicity1491.8%
Novolog1311.6%
Glipizide1241.5%
Humulin N1161.4%

Other products listed in reports where Humalog Mix75/25 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

MeasureHumalog Mix75/25Insulin analogAll reports
Reports as suspect product8,139289,29320,646,523
Share of that pool—2.8%0%
Reports, latest 12 months140—1,332,454
Marked serious23.8%42.7%57.4%
Death recorded among outcomes, per 1,000 reports123591
Hospitalisation recorded, per 1,000 reports118186213
Consumer-filed share93.7%78.7%45.8%
Top term, share of reportsBlood glucose increased 31%median 23%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 analog class

DrugName typeReportsLatest 12 monthsMarked serious
Humalogbrand71,1742,31234.4%
Lantus Solostarbrand45,7154,23024.6%
Lantusbrand39,1283,71863.8%
Insulin glarginegeneric27,9941,92342.8%
Toujeobrand15,4911,33224.7%
Novologbrand14,4771,57661.8%
Levemirbrand13,65267154.8%
Tresibabrand10,3731,26355.1%
Insulin lisprogeneric8,2091,11645.6%
Insulingeneric8,13552288.9%
Apidrabrand3,6218669.2%
Insulin aspartgeneric3,23255388.6%
Sterile diluentgeneric3,22160019.4%
Humalog Kwikpenbrand3,04016927.5%
NovoLog Mix 70/30brand2,10123065.5%

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 Humalog Mix75/25 reports

How many adverse event reports has FDA received for Humalog Mix75/25?

8,139 reports list Humalog Mix75/25 as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 140 of them arrived in the latest 12 months. Another 290 list it only as a concomitant medication.

What reactions are recorded in Humalog Mix75/25 reports?

blood glucose increased (31%), incorrect dose administered (9.9%), blood glucose decreased (7.3%), drug dispensing error (6.7%) and visual impairment (6.6%). 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 Humalog Mix75/25 was responsible.

How serious are the reports?

23.8% are marked serious by the reporter. Among the outcomes recorded, 1.2% of reports include death and 11.8% 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 (93.7%), pharmacist (2.7%) and other health professional (1.9%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Humalog Mix75/25 rising?

140 reports in the 12 months to June 2026, down 24% from 185 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 Humalog Mix75/25 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 Humalog Mix75/25?

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 Humalog Mix75/25 as a suspect or interacting product; reports listing it only as a concomitant medication (290) 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.