Reported Reactions

Drugs › Penem antibacterial

Generic name

Meropenem: adverse event reports filed with FDA

15,365 reports list it as a suspect or interacting product, 2004–2026. Class: Penem antibacterial. Also reported as Meropenem /01250502/, Meropenem Injection, Meropenem For Injection Usp.

15,365
reports as suspect product
0.1% of all reports · about 683 a year
1,505
reports, 12 months to June 2026
1,814 in the 12 months before
97.6%
marked serious by the reporter
94.1% across the class
27.8%
record death among outcomes, as reported
4,277 reports · not verified by FDA

Between January 2004 and June 2026, 15,365 adverse event reports received by FDA list meropenem, a generic name as a suspect or interacting product. Reports that mention it only as a concomitant medication (17,163) are left out of every figure here.

In the 12 months to June 2026, 1,505 reports listed it, down 17% from 1,814 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 683 reports a year and 0.1% of the 20,646,523 reports in the database, and 65.6% of the reports for the penem antibacterial 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 drug ineffective (20.1%), off label use (10.9%) and condition aggravated (5.3%). A report can list several reactions, so shares add to more than 100%; 1,728 different terms appear across these reports. Drug ineffective is recorded in 20.1% of these reports, a larger share than in the median penem antibacterial drug (15.7%).

97.6% of the reports are marked serious by the reporter (94.1% across the class); 27.8% record death among the outcomes and 51.2% record hospitalisation, as reported. 51.3% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (26.6%). 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

0102204Jul 2021: 140Aug 2021: 126Sep 2021: 156Oct 2021: 123Nov 2021: 120Dec 2021: 842022Jan 2022: 90Feb 2022: 84Mar 2022: 100Apr 2022: 90May 2022: 157Jun 2022: 113Jul 2022: 153Aug 2022: 85Sep 2022: 98Oct 2022: 90Nov 2022: 147Dec 2022: 1342023Jan 2023: 101Feb 2023: 138Mar 2023: 128Apr 2023: 104May 2023: 122Jun 2023: 134Jul 2023: 124Aug 2023: 130Sep 2023: 118Oct 2023: 139Nov 2023: 137Dec 2023: 1182024Jan 2024: 94Feb 2024: 133Mar 2024: 127Apr 2024: 113May 2024: 155Jun 2024: 204Jul 2024: 203Aug 2024: 154Sep 2024: 156Oct 2024: 198Nov 2024: 116Dec 2024: 1862025Jan 2025: 135Feb 2025: 128Mar 2025: 124Apr 2025: 116May 2025: 133Jun 2025: 165Jul 2025: 163Aug 2025: 145Sep 2025: 137Oct 2025: 137Nov 2025: 63Dec 2025: 1292026Jan 2026: 97Feb 2026: 116Mar 2026: 120Apr 2026: 150May 2026: 137Jun 2026: 111

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

09201,8392004: 4120042005: 242006: 422007: 7620072008: 1162009: 1052010: 12920102011: 2922012: 3432013: 28820132014: 2382015: 3872016: 48420162017: 7232018: 1,0452019: 1,10920192020: 1,3492021: 1,5952022: 1,34120222023: 1,4932024: 1,8392025: 1,57520252026: 731

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Meropenem reports recording the termmedian drug in penem antibacterial

  1. Drug ineffectivethe medicine did not work as expected20.1%3,086
  2. Off label useused for a purpose or in a way not on the label10.9%1,677
  3. Condition aggravatedthe condition being treated got worse5.3%807
  4. Pyrexiafever4.9%760
  5. Septic shockshock arising from infection4.5%695
  6. Multiple organ dysfunction syndromeseveral organs failing4.4%681
  7. Drug reaction with eosinophilia and systemic symptomsDRESS, a severe reaction with rash, fever and organ involvement4%613
  8. Drug interactionan interaction between medicines3.5%536
  9. Acute kidney injurysudden loss of kidney function3.3%507
  10. Thrombocytopenialow platelets3.3%502
  11. Sepsisa severe body-wide response to infection3.2%489
  12. Rashskin rash2.9%445
  13. Diarrhoealoose or frequent stools2.7%417
  14. Pneumonialung infection2.7%410
  15. Product use in unapproved indicationused for a purpose not on the label2.6%393
  16. Respiratory failurethe lungs could not supply enough oxygen2.6%393
  17. Toxic epidermal necrolysisa severe skin reaction with peeling2.2%340
  18. Dyspnoeashortness of breath2.2%333
  19. Pancytopenialow counts of all blood cells2.1%328
  20. Neutropenialow neutrophils, a type of white blood cell2.1%327
  21. Anaemialow red blood cells2%305
  22. Renal failurekidney failure1.8%273
  23. Candida infectionthrush, a yeast infection1.7%265
  24. Febrile neutropeniafever with low white blood cells1.7%264
  25. Rash maculo-papulara rash of flat and raised spots1.7%263
  26. Hypotensionlow blood pressure1.7%257

Top 30 of 1,728 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 6 drugs in the penem antibacterial 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

Death27.8%4,277
Life-threatening16.4%2,519
Hospitalisation (initial or prolonged)51.2%7,865
Disability1.3%200
Congenital anomaly0.3%40
Other serious64.9%9,978
Not serious2.4%375

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 23,429 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 23.4%523
2 to 114.4%669
12 to 173.2%490
18 to 4419.4%2,974
45 to 6426.6%4,088
65 to 7415.8%2,431
75 and over13.6%2,095
Age not given13.6%2,095

Patient sex

Female39.4%6,048
Male51%7,830
Not given9.7%1,487

Who reported

Physician32.5%4,991
Pharmacist9.1%1,403
Other health professional51.3%7,878
Lawyer0%5
Consumer or non-health professional5.1%785
Not given2%303

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 15.6% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Antibiotic therapy1,0957.1%
Pneumonia8345.4%
Infection6154%
Sepsis5543.6%
Covid-192961.9%
Evidence based treatment2381.5%

The indication field is filled in by the reporter and is often blank; shares are of all 15,365 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Meropenem reports
Vancomycin4,19727.3%
Linezolid2,00813.1%
Ciprofloxacin1,4589.5%
Levofloxacin1,4079.2%
Ceftriaxone1,3829%
Fluconazole1,3779%
Metronidazole1,3418.7%
Piperacillin and tazobactam1,3188.6%
Amikacin1,2458.1%
Piperacillin sodium,tazobactam sodium1,1517.5%

Other products listed in reports where Meropenem 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

MeasureMeropenemPenem antibacterialAll reports
Reports as suspect product15,36523,42920,646,523
Share of that pool—65.6%0.1%
Reports, latest 12 months1,505—1,332,454
Marked serious97.6%94.1%57.4%
Death recorded among outcomes, per 1,000 reports27822491
Hospitalisation recorded, per 1,000 reports512487213
Consumer-filed share5.1%7.8%45.8%
Top term, share of reportsDrug ineffective 20.1%median 15.7%6.3%

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 penem antibacterial class

DrugName typeReportsLatest 12 monthsMarked serious
Invanzbrand2,8009474.6%
Ertapenemgeneric1,68627690.1%
Imipenem and cilastatin sodiumgeneric1,2761096.2%
Imipenem and cilastatingeneric1,2295997%
Ertapenem sodiumgeneric1,0733696.2%

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 Meropenem reports

How many adverse event reports has FDA received for Meropenem?

15,365 reports list Meropenem as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 1,505 of them arrived in the latest 12 months. Another 17,163 list it only as a concomitant medication.

What reactions are recorded in Meropenem reports?

drug ineffective (20.1%), off label use (10.9%), condition aggravated (5.3%), pyrexia (4.9%) and septic shock (4.5%). 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 Meropenem was responsible.

How serious are the reports?

97.6% are marked serious by the reporter. Among the outcomes recorded, 27.8% of reports include death and 51.2% 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 (51.3%), physician (32.5%) and pharmacist (9.1%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Meropenem rising?

1,505 reports in the 12 months to June 2026, down 17% from 1,814 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 Meropenem 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 Meropenem?

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 Meropenem as a suspect or interacting product; reports listing it only as a concomitant medication (17,163) 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.