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Piperacillin Side Effects

The most commonly reported side effects of piperacillin include pyrexia, acute kidney injury, and off label use, based on 25,305 FDA adverse event reports from 2004 to 2025. 7.1% of reports found the drug to be ineffective.

Piperacillin side effects

Percentages show how often each reaction appears relative to total reports for piperacillin.

1
Drug Ineffective7.1%1,797
2
Pyrexia6.4%1,630
3
Acute Kidney Injury6.4%1,622
4
Off Label Use5.9%1,496
5
Pneumonia4.4%1,117
6
Sepsis3.6%917
7
Diarrhoea3.6%911
8
Dyspnoea3.0%770
9
Thrombocytopenia3.0%747
10
Febrile Neutropenia2.8%716
11
Rash2.7%672
12
Hypotension2.6%654
13
Septic Shock2.6%654
14
Condition Aggravated2.5%638
15
Drug Reaction With Eosinophilia And Systemic Symptoms2.4%604

These are voluntary reports and do not establish that piperacillin caused these reactions.

Report severity

95.3%Serious24,107 reports
58.3%Hospitalizations14,765 reports
22.9%Fatal5,800 reports

Seriousness is determined by the reporter, not by OpenClaim.

Piperacillin drug interactions

Other drugs that appear in adverse event reports alongside piperacillin. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Tazobactam-sodium32.8%8,306
2
Vancomycin13.0%3,284
3
Meropenem4.9%1,245
4
Ciprofloxacin4.6%1,167
5
Prednisone3.7%936
6
Dexamethasone3.7%926
7
Ceftriaxone-sodium3.6%912
8
Cyclophosphamide3.5%898
9
Linezolid3.5%895
10
Methylprednisolone3.5%880
11
Cytarabine3.2%799
12
Rituximab2.9%743
13
Metronidazole2.9%741
14
Levofloxacin2.9%738
15
Amphotericin-b2.8%718

Taken alongside

1
Tazobactam-sodium41.7%10,553
2
Vancomycin16.8%4,240
3
Acetaminophen16.4%4,160
4
Furosemide12.3%3,123
5
Pantoprazole-sodium10.4%2,643
6
Ondansetron9.3%2,356
7
Dexamethasone7.7%1,936
8
Aspirin7.6%1,911
9
Meropenem7.3%1,850
10
Insulin7.0%1,773
11
Enoxaparin-sodium6.9%1,757
12
Fluconazole6.9%1,737
13
Omeprazole6.7%1,698
14
Acyclovir6.6%1,669
15
Potassium-chloride6.5%1,650

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports piperacillin side effects

39.0% of piperacillin adverse event reports involve female patients and 52.6% involve male patients. The largest age group is adult at 50%. These figures reflect who reports side effects, not underlying risk.

Sex

Female39.0%
Male52.6%
Unknown8.4%

Age group

< 22.0%
2–113.4%
12–172.6%
18–6450.3%
65+41.6%

What is piperacillin used for

Conditions and purposes for which patients were taking piperacillin when the adverse event was reported.

Abdominal AbscessAbdominal Cavity DrainageAbdominal DistensionAbdominal InfectionAbdominal InjuryAbdominal MassAbdominal PainAbdominal Pain UpperAbdominal RigidityAbdominal SepsisAbdominal TendernessAbdominal Wall AbscessAbdominal Wall InfectionAbortion ThreatenedAbscess

Showing 15 of 1,401 indications

Piperacillin brand names and reporting trend

Piperacillin is sold under brand names including Piperacillin And Tazobactam, Piperacillin.

Brand names

Piperacillin And Tazobactam3,342
Piperacillin1,595

Quarterly reports (20042025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking piperacillin with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.