Ceftriaxone and Piperacillin and tazobactam interaction
Ceftriaxone and Piperacillin and tazobactam: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Piperacillin and tazobactam (Piperacillin and Tazobactam and Sodium Chloride) label · effective 2026-05-08
Piperacillin and Tazobactam for Injection and Sodium Chloride Injection is contraindicated in patients with a history of allergic reactions to any of the penicillins, cephalosporins, or betalactamase inhibitors.
Patients with a history of allergic reactions to any of the penicillins, cephalosporins, or beta-lactamase inhibitors.
Nephrotoxicity in critically ill patients has been observed; the use of piperacillin and tazobactam was found to be an independent risk factor for renal failure and was associated with delayed recovery of renal function as compared to other beta-lactam antibacterial drugs in a randomized, multicenter, controlled trial in critically ill patients.
Hematologic Adverse Reactions Bleeding manifestations have occurred in some patients receiving beta-lactam drugs, including piperacillin.
Nephrotoxicity in Critically Ill Patients The use of piperacillin and tazobactam was found to be an independent risk factor for renal failure and was associated with delayed recovery of renal function as compared to other beta-lactam antibacterial drugs in a randomized, multicenter, controlled trial in critically ill patients [see Adverse Reactions (6.1) ].
From the Ceftriaxone (CEFTRIAXONE AND DEXTROSE) label · effective 2022-01-13
Anaphylaxis to ceftriaxone or other cephalosporin class antibacterials, penicillins, or other beta-lactam antibacterials ( 4.1 )
Anaphylaxis to Ceftriaxone or the Cephalosporin Class of Antibacterials, Penicillins, or Other Beta-lactam Antibacterials Ceftriaxone for Injection and Dextrose Injection is contraindicated in patients who have a history of anaphylaxis to ceftriaxone or the cephalosporin class of antibacterials, penicillins, or other beta-lactam antibacterials [see Warnings and…
Hypersensitivity Reactions to Ceftriaxone, Cephalosporins, Penicillins, or Other Drugs Serious, occasionally fatal, hypersensitivity (anaphylactic) reactions have been reported with ceftriaxone.
Exercise caution if this product is to be given to penicillin-sensitive patients because cross-hypersensitivity among beta-lactam antibacterials has been clearly documented and may occur in up to 10% of patients with a history of penicillin allergy.
Cross-hypersensitivity may occur in up to 10% of patients with a history of penicillin allergy.
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.