Reported Reactions

Drugs › Insulin analog

Brand name · Insulin lispro

Humalog Junior Kwikpen: adverse event reports filed with FDA

751 reports list it as a suspect or interacting product, 2018–2026. Class: Insulin analog.

751
reports as suspect product
0% of all reports · about 88 a year
55
reports, 12 months to June 2026
120 in the 12 months before
12.9%
marked serious by the reporter
42.7% across the class
0.4%
record death among outcomes, as reported
3 reports · not verified by FDA

751 adverse event reports received by FDA list the brand name Humalog Junior Kwikpen (insulin lispro) as a suspect or interacting product, from January 2018 to June 2026. A further 174 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, 55 reports listed it, down 54% from 120 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 88 reports a year and 0% of the 20,646,523 reports in the database, and 0.3% 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 (61.1%), incorrect dose administered (21.4%) and drug ineffective (10.7%). A report can list several reactions, so shares add to more than 100%; 84 different terms appear across these reports. Blood glucose increased is recorded in 61.1% of these reports, a larger share than in the median insulin analog drug (23%).

12.9% of the reports are marked serious by the reporter (42.7% across the class); 0.4% record death among the outcomes and 4.7% record hospitalisation, as reported. 93.7% of the reports came from consumers, and the largest patient age group is 2 to 11 (17.4%). 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

01632Jul 2021: 10Aug 2021: 6Sep 2021: 8Oct 2021: 16Nov 2021: 9Dec 2021: 92022Jan 2022: 8Feb 2022: 5Mar 2022: 7Apr 2022: 11May 2022: 6Jun 2022: 15Jul 2022: 2Aug 2022: 8Sep 2022: 11Oct 2022: 5Nov 2022: 9Dec 2022: 42023Jan 2023: 5Feb 2023: 9Mar 2023: 8Apr 2023: 7May 2023: 6Jun 2023: 5Jul 2023: 2Aug 2023: 1Sep 2023: 8Oct 2023: 8Nov 2023: 2Dec 2023: 42024Jan 2024: 3Feb 2024: 7Mar 2024: 6Apr 2024: 1May 2024: 9Jun 2024: 2Jul 2024: 8Aug 2024: 4Sep 2024: 4Oct 2024: 9Nov 2024: 10Dec 2024: 72025Jan 2025: 2Feb 2025: 8Mar 2025: 17Apr 2025: 8May 2025: 32Jun 2025: 11Jul 2025: 5Aug 2025: 4Sep 2025: 7Oct 2025: 4Nov 2025: 3Dec 2025: 92026Jan 2026: 3Feb 2026: 1Mar 2026: 3Apr 2026: 2May 2026: 6Jun 2026: 8

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

0591172018: 5920182019: 11020192020: 10620202021: 11720212022: 9120222023: 6520232024: 7020242025: 11020252026: 232026

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Humalog Junior Kwikpen reports recording the termmedian drug in insulin analog

  1. Blood glucose increasedraised blood sugar reading61.1%459
  2. Incorrect dose administeredthe wrong dose was given21.4%161
  3. Drug ineffectivethe medicine did not work as expected10.7%80
  4. Blood glucose decreasedlow blood sugar reading10%75
  5. Product storage errorthe product was stored wrongly7.2%54
  6. Product dose omission issuea dose was missed6.4%48
  7. Haemorrhagebleeding4.3%32
  8. Wrong technique in product usage processthe product was used in the wrong way4.3%32
  9. Visual impairmentreduced vision2.9%22
  10. Injection site painpain where the injection was given2%15
  11. Product dose omissiona dose was missed2%15
  12. Drug hypersensitivityan allergic-type reaction to a medicine1.3%10
  13. Wrong patient received product1.3%10
  14. Glycosylated haemoglobin increaseda raised HbA1c, the long-term sugar measure1.2%9
  15. Illness0.9%7
  16. Painpain, site not specified0.9%7
  17. Discomfortdiscomfort0.8%6
  18. Insulin resistancethe body responding less to insulin0.8%6
  19. Drug dose omissiona dose was missed0.7%5
  20. Hyperglycaemiahigh blood sugar0.7%5
  21. Anxietyanxiety0.5%4
  22. Blood ketone body increasedraised ketones in the blood0.5%4
  23. Coma0.5%4
  24. Hypoacusisreduced hearing0.5%4

Top 30 of 84 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

Death0.4%3
Life-threatening0.3%2
Hospitalisation (initial or prolonged)4.7%35
Disability0.7%5
Congenital anomaly0%0
Other serious8.4%63
Not serious87.1%654

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 20.8%6
2 to 1117.4%131
12 to 174.9%37
18 to 444.7%35
45 to 645.5%41
65 to 745.1%38
75 and over7.6%57
Age not given54.1%406

Patient sex

Female58.1%436
Male37.7%283
Not given4.3%32

Who reported

Physician1.5%11
Pharmacist1.5%11
Other health professional3.3%25
Lawyer0%0
Consumer or non-health professional93.7%704
Not given0%0

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 97.1% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Type 1 diabetes mellitus22329.7%
Diabetes mellitus8110.8%
Type 2 diabetes mellitus202.7%

The indication field is filled in by the reporter and is often blank; shares are of all 751 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Humalog Junior Kwikpen reports
Lantus13818.4%
Humalog11815.7%
Insulin glargine689.1%
Tresiba466.1%
Toujeo182.4%
Levemir172.3%
Novolog91.2%
Insulin lispro70.9%
Metformin70.9%

Other products listed in reports where Humalog Junior Kwikpen 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 Junior KwikpenInsulin analogAll reports
Reports as suspect product751289,29320,646,523
Share of that pool—0.3%0%
Reports, latest 12 months55—1,332,454
Marked serious12.9%42.7%57.4%
Death recorded among outcomes, per 1,000 reports43591
Hospitalisation recorded, per 1,000 reports47186213
Consumer-filed share93.7%78.7%45.8%
Top term, share of reportsBlood glucose increased 61.1%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%
Humalog Mix75/25brand8,13914023.8%
Insulingeneric8,13552288.9%
Apidrabrand3,6218669.2%
Insulin aspartgeneric3,23255388.6%
Sterile diluentgeneric3,22160019.4%
Humalog Kwikpenbrand3,04016927.5%

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 Junior Kwikpen reports

How many adverse event reports has FDA received for Humalog Junior Kwikpen?

751 reports list Humalog Junior Kwikpen as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 55 of them arrived in the latest 12 months. Another 174 list it only as a concomitant medication.

What reactions are recorded in Humalog Junior Kwikpen reports?

blood glucose increased (61.1%), incorrect dose administered (21.4%), drug ineffective (10.7%), blood glucose decreased (10%) and product storage error (7.2%). 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 Junior Kwikpen was responsible.

How serious are the reports?

12.9% are marked serious by the reporter. Among the outcomes recorded, 0.4% of reports include death and 4.7% 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%), other health professional (3.3%) and physician (1.5%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Humalog Junior Kwikpen rising?

55 reports in the 12 months to June 2026, down 54% from 120 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 Junior Kwikpen 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 Junior Kwikpen?

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 Junior Kwikpen as a suspect or interacting product; reports listing it only as a concomitant medication (174) 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.