Drug interactions
enoxaparin + piperacillin
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
Increased bleeding risk due to piperacillin-associated platelet dysfunction/thrombocytopenia combined with anticoagulation.
Mechanism of action
Piperacillin can impair platelet aggregation and cause thrombocytopenia → additive hemostatic impairment with LMWH anticoagulation.
Clinical management
Avoid combination if possible in high bleeding risk. If used, monitor for bleeding, CBC with platelets, hemoglobin/hematocrit; assess renal function and adjust LMWH as indicated.
Drug reference
References
- Zosyn (piperacillin/tazobactam) Prescribing Information — Hematologic effects/bleeding and use with anticoagulants — FDA Label
- Piperacillin — Drug Interactions — Lexicomp
- Lovenox (enoxaparin) Prescribing Information — Concomitant use with agents affecting hemostasis — FDA Label
Frequently asked questions
Can I take enoxaparin with piperacillin?
The interaction is rated: Moderate. Increased bleeding risk due to piperacillin-associated platelet dysfunction/thrombocytopenia combined with anticoagulation.
How serious is the interaction between enoxaparin and piperacillin?
The interaction is rated: Moderate. Evidence level: Moderate.
How is the interaction between enoxaparin and piperacillin managed?
Avoid combination if possible in high bleeding risk. If used, monitor for bleeding, CBC with platelets, hemoglobin/hematocrit; assess renal function and adjust LMWH as indicated.
Why do enoxaparin and piperacillin interact?
Piperacillin can impair platelet aggregation and cause thrombocytopenia → additive hemostatic impairment with LMWH anticoagulation.
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