Cefotaxime Injection and Piperine: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Cefotaxime Injection
Piperine
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Increased bioavailability of cefotaxime
Interaction Deep Dive
Data suggests that piperine increases the bioavailability of cefotaxime in rats1. Until human bioavailability studies are performed, caution is advised when using these two substances concomitantly.
Why it happens (mechanism)
Unknown
Literature reports
1 report — tap to read
a) Piperine increased the bioavailability of cefotaxime in rats. Rats were given a pretreatment oral dose of piperine (either 10 milligrams/kilogram (mg/kg) or 20 mg/kg) followed by cefotaxime 10 mg/kg (intraperitoneally) 30 minutes later. Cmax increased from 20.5 micrograms/milliliter (mcg/ml) to 31.0 mcg/ml and 35.13 mcg/ml for the 10 mg/kg and 20 mg/kg doses, respectively. The area under the curve (AUC) increased from 32.64 mcg/ml/hr to 55.85 mcg/ml/hr and 71.09 mcg/ml/hr, respectively 1.
Common questions
Can I take Cefotaxime Injection and Piperine together?
Increased bioavailability of cefotaxime Always confirm with your pharmacist or prescriber before making any change.
How serious is the Cefotaxime Injection and Piperine interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Cefotaxime Injection or Piperine need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Hiwale AR, Dhuley JN, & Naik SR: Effect of co-administration of piperine on pharmacokinetics of beta-lactam antibiotics in rats. Indian Journal of Experimental Biology 2002; 40:277-281.
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Keep reading about Piperine
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