Reported Reactions

Reactions

MedDRA preferred term · a situation that could lead to a medication error

Circumstance or information capable of leading to medication error: adverse event reports recording this term

33,110 reports to FDA record it, 2005–2026; 0.2% of the database.

33,110
reports recording the term
0.2% of all reports
2,487
reports, 12 months to June 2026
3,265 in the 12 months before
11.1%
marked serious by the reporter
57.4% across all reports
0.5%
record death among outcomes, as reported
9.1% across all reports

"Circumstance or information capable of leading to medication error" (in plain words, a situation that could lead to a medication error) is a MedDRA preferred term recorded in 33,110 adverse event reports received by FDA, 0.2% of the database, from April 2005 to June 2026. The term is chosen by whoever codes the report to match what the reporter described.

2,487 reports recorded it in the 12 months to June 2026, down 24% from 3,265 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Of reports recording this term, 11.1% are marked serious, 0.5% include death among the outcomes and 4.2% include hospitalisation, as reported.

The drugs listed most often as suspect products in those reports are Repatha, Enbrel and Prolia. That order mostly follows how many reports each drug has overall; the table also gives the term's share within each drug's own reports. 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

07851,569Jul 2021: 128Aug 2021: 132Sep 2021: 118Oct 2021: 100Nov 2021: 130Dec 2021: 1122022Jan 2022: 103Feb 2022: 85Mar 2022: 111Apr 2022: 92May 2022: 119Jun 2022: 121Jul 2022: 201Aug 2022: 739Sep 2022: 729Oct 2022: 673Nov 2022: 694Dec 2022: 4412023Jan 2023: 645Feb 2023: 613Mar 2023: 493Apr 2023: 393May 2023: 335Jun 2023: 222Jul 2023: 253Aug 2023: 558Sep 2023: 470Oct 2023: 443Nov 2023: 434Dec 2023: 3822024Jan 2024: 518Feb 2024: 470Mar 2024: 476Apr 2024: 497May 2024: 428Jun 2024: 498Jul 2024: 1,569Aug 2024: 313Sep 2024: 251Oct 2024: 215Nov 2024: 87Dec 2024: 1252025Jan 2025: 142Feb 2025: 96Mar 2025: 107Apr 2025: 144May 2025: 118Jun 2025: 98Jul 2025: 163Aug 2025: 200Sep 2025: 241Oct 2025: 336Nov 2025: 327Dec 2025: 2812026Jan 2026: 318Feb 2026: 239Mar 2026: 102Apr 2026: 92May 2026: 90Jun 2026: 98

FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

Drugs listed as suspect products in these reports

DrugClassReports with this termShare of the drug's own reports
RepathaPCSK9 inhibitor2,8701.8%
EnbrelTumor necrosis factor blocker2,1260.4%
ProliaRANK ligand inhibitor1,8311.3%
MiraLAXOsmotic laxative1,3543.5%
AranespErythropoiesis-stimulating agent1,0482.8%
Aimovig—9861.9%
OmnitropeRecombinant human growth hormone8837.9%
NeulastaLeukocyte growth factor8811.1%
SymbicortCorticosteroid7712%
EliquisFactor Xa inhibitor6280.5%
EpogenErythropoiesis-stimulating agent53712.4%
AsmanexCorticosteroid51310.7%
Bydureon—4432.3%
DuleraCorticosteroid3474.8%
MvasiVascular endothelial growth factor inhibitor3457.7%
Albuterol sulfatebeta2-Adrenergic agonist3360.8%
Bydureon Bcise—3352.6%
EstradiolEstrogen3262.1%
Pulmicort FlexhalerCorticosteroid3247.4%
XgevaRANK ligand inhibitor2881.3%
KyprolisProteasome inhibitor2822.4%
KanjintiHER2/neu receptor antagonist25717.9%
NeupogenLeukocyte growth factor2533.5%
NexplanonProgestin2410.6%
NplateThrombopoietin receptor agonist2362%

Drugs with a page on this site, ordered by the number of their reports recording this term. The last column is the term's share within that drug's own reports, against 0.2% across the whole database. 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."

By pharmacologic class

ClassReports with this termShare of class reportsMedian drug in class
PCSK9 inhibitor2,8701.6%0%
Corticosteroid2,7360.3%0%
Tumor necrosis factor blocker2,6610.3%0%
RANK ligand inhibitor2,1191.3%1.3%
Erythropoiesis-stimulating agent1,6422.5%0%
Osmotic laxative1,4231.1%0%
Leukocyte growth factor1,1421%0.1%
Recombinant human growth hormone8834.1%0%
Factor Xa inhibitor6700.2%0%
Nonsteroidal anti-inflammatory drug6130.1%0%

Classes ordered by count. Class shares follow the class's overall report volume as much as anything else.

Patients in these reports

Patient age

Under 20.2%68
2 to 111%337
12 to 170.9%310
18 to 443.5%1,146
45 to 648.2%2,728
65 to 746.9%2,276
75 and over6.5%2,148
Age not given72.8%24,097

Patient sex

Female34.6%11,470
Male20.7%6,844
Not given44.7%14,796

Grey bar: all 20,646,523 reports in the database. 94.4% of these reports give the United States as the country.

Questions about "Circumstance or information capable of leading to medication error"

What does "Circumstance or information capable of leading to medication error" mean in an adverse event report?

In plain language: a situation that could lead to a medication error. It is a MedDRA preferred term, the dictionary FDA uses to code what a reporter described. The report's own description is not published by openFDA and is not shown here.

How many reports record circumstance or information capable of leading to medication error?

33,110 reports through June 2026 (0.2% of all reports), 2,487 of them in the latest 12 months.

Which drugs appear most often in these reports?

Repatha (2,870), Enbrel (2,126), Prolia (1,831), MiraLAX (1,354) and Aranesp (1,048). Drugs with many reports overall lead almost every term's list. 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."

Does a drug appearing here mean it was responsible for this reaction?

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."

I have this symptom. What should I do?

This site cannot assess anyone. A pharmacist or clinician can; for an emergency, call the local emergency number. Nothing on this page is medical advice.

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. Terms are pooled across spelling and capitalisation variants of one MedDRA preferred term. 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.