Generic name
Sterile diluent: adverse event reports filed with FDA
3,221 reports list it as a suspect or interacting product, 2012–2026. Class: Insulin analog.
- 3,221
- reports as suspect product
- 0% of all reports · about 237 a year
- 600
- reports, 12 months to June 2026
- 232 in the 12 months before
- 19.4%
- marked serious by the reporter
- 42.7% across the class
- 1.3%
- record death among outcomes, as reported
- 42 reports · not verified by FDA
Between December 2012 and June 2026, 3,221 adverse event reports received by FDA list sterile diluent, a generic name as a suspect or interacting product. Reports that mention it only as a concomitant medication (104) are left out of every figure here.
In the 12 months to June 2026, 600 reports listed it, up 159% from 232 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 237 reports a year and 0% of the 20,646,523 reports in the database, and 1.1% 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 MedDRA terms listed most often are no adverse event (61.1%), product storage error (22.6%) and expired product administered (12.9%). A report can list several reactions, so shares add to more than 100%; 340 different terms appear across these reports. No adverse event is recorded in 61.1% of these reports, with no counterpart in the median insulin analog drug (0%).
19.4% of the reports are marked serious by the reporter (42.7% across the class); 1.3% record death among the outcomes and 6.5% record hospitalisation, as reported. 48.2% of the reports came from other health professionals, and the largest patient age group is under 2 (14.5%). 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
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 Sterile diluent reports recording the termmedian drug in insulin analog
- No adverse eventno adverse event was reported61.1%1,967
- Product storage errorthe product was stored wrongly22.6%728
- Expired product administeredthe product was used past its expiry date12.9%416
- Pyrexiafever5.6%179
- Herpes zostershingles5.5%177
- Incorrect product storagethe product was stored wrongly5.4%174
- Product preparation error3.8%122
- Incorrect route of product administrationthe product was given by the wrong route2.7%87
- Injection site erythemaredness where the injection was given2.7%87
- Rashskin rash2.4%78
- Vaccination failure2.4%76
- Inappropriate schedule of product administrationthe product was taken at the wrong times2%65
- Product preparation issuea problem preparing the product1.9%62
- Injection site painpain where the injection was given1.6%51
- Incorrect route of drug administrationthe medicine was given by the wrong route1.6%50
- Product storage issue1.5%48
- Vomitingbeing sick1.5%47
- Inappropriate schedule of drug administrationthe medicine was taken at the wrong times1.4%46
- Exposure during pregnancythe medicine was taken during pregnancy1.4%44
- Incorrect dose administeredthe wrong dose was given1.3%43
- Urticariahives1.3%42
- Wrong drug administeredthe wrong medicine was given1.3%41
- Extra dose administered1.2%40
- Injection site swellingswelling where the injection was given1.2%40
- Overdosea dose above the recommended amount1.2%40
- Diarrhoealoose or frequent stools1.1%34
Top 30 of 340 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
Patient age
Patient sex
Who reported
Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 87.2% of reports give the United States as the country of the event or reporter.
Reason for use recorded
| Indication as recorded (MedDRA) | Reports | Share |
|---|---|---|
| Prophylaxis | 1,041 | 32.3% |
| Immunisation | 124 | 3.8% |
| Medication dilution | 63 | 2% |
| Adverse drug reaction | 8 | 0.2% |
| Routine health maintenance | 5 | 0.2% |
| Infertility female | 3 | 0.1% |
The indication field is filled in by the reporter and is often blank; shares are of all 3,221 reports.
Drugs most often listed in the same reports
| Drug (any role in the report) | Reports | Share of Sterile diluent reports |
|---|---|---|
| Pregnyl | 68 | 2.1% |
| Influenza virus vaccine | 24 | 0.7% |
| Aspirin | 19 | 0.6% |
| Atorvastatin | 18 | 0.6% |
| Metoprolol | 15 | 0.5% |
| Hydrochlorothiazide | 14 | 0.4% |
| Levothyroxine sodium | 14 | 0.4% |
| Sodium chloride | 13 | 0.4% |
| Lisinopril | 11 | 0.3% |
| Metformin | 11 | 0.3% |
Other products listed in reports where Sterile diluent 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
| Measure | Sterile diluent | Insulin analog | All reports |
|---|---|---|---|
| Reports as suspect product | 3,221 | 289,293 | 20,646,523 |
| Share of that pool | — | 1.1% | 0% |
| Reports, latest 12 months | 600 | — | 1,332,454 |
| Marked serious | 19.4% | 42.7% | 57.4% |
| Death recorded among outcomes, per 1,000 reports | 13 | 35 | 91 |
| Hospitalisation recorded, per 1,000 reports | 65 | 186 | 213 |
| Consumer-filed share | 17.8% | 78.7% | 45.8% |
| Top term, share of reports | No adverse event 61.1% | median 0% | 0.8% |
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
| Drug | Name type | Reports | Latest 12 months | Marked serious |
|---|---|---|---|---|
| Humalog | brand | 71,174 | 2,312 | 34.4% |
| Lantus Solostar | brand | 45,715 | 4,230 | 24.6% |
| Lantus | brand | 39,128 | 3,718 | 63.8% |
| Insulin glargine | generic | 27,994 | 1,923 | 42.8% |
| Toujeo | brand | 15,491 | 1,332 | 24.7% |
| Novolog | brand | 14,477 | 1,576 | 61.8% |
| Levemir | brand | 13,652 | 671 | 54.8% |
| Tresiba | brand | 10,373 | 1,263 | 55.1% |
| Insulin lispro | generic | 8,209 | 1,116 | 45.6% |
| Humalog Mix75/25 | brand | 8,139 | 140 | 23.8% |
| Insulin | generic | 8,135 | 522 | 88.9% |
| Apidra | brand | 3,621 | 86 | 69.2% |
| Insulin aspart | generic | 3,232 | 553 | 88.6% |
| Humalog Kwikpen | brand | 3,040 | 169 | 27.5% |
| NovoLog Mix 70/30 | brand | 2,101 | 230 | 65.5% |
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 Sterile diluent reports
How many adverse event reports has FDA received for Sterile diluent?
3,221 reports list Sterile diluent as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 600 of them arrived in the latest 12 months. Another 104 list it only as a concomitant medication.
What reactions are recorded in Sterile diluent reports?
no adverse event (61.1%), product storage error (22.6%), expired product administered (12.9%), pyrexia (5.6%) and herpes zoster (5.5%). 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 Sterile diluent was responsible.
How serious are the reports?
19.4% are marked serious by the reporter. Among the outcomes recorded, 1.3% of reports include death and 6.5% 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?
other health professional (48.2%), physician (19.8%) and consumer or non-health professional (17.8%). Most reports reach FDA through the manufacturer, which must forward reports it receives.
Are reports for Sterile diluent rising?
600 reports in the 12 months to June 2026, up 159% from 232 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 Sterile diluent 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 Sterile diluent?
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 Sterile diluent as a suspect or interacting product; reports listing it only as a concomitant medication (104) 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.