Calcium Carbonate and Ceftriaxone: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Calcium Carbonate and Ceftriaxone unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Calcium Carbonate interacts with Ceftriaxone

Ceftriaxone forms insoluble calcium-ceftriaxone precipitates in the lungs and kidneys, particularly in neonates, causing fatal pulmonary and renal events.

What you should do

Contraindicated in neonates ≤28 days receiving IV calcium; in older patients separate infusions by flushing line and avoid simultaneous administration.

Key facts

Severity

Major — avoid combination

Mechanism

Ceftriaxone forms insoluble calcium-ceftriaxone precipitates in the lungs and kidneys, particularly in neonates, causing...

Action

Contraindicated in neonates ≤28 days receiving IV calcium; in older patients separate infusions by flushing line and avo...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Calcium Carbonate and Ceftriaxone together?

No — this combination should generally be avoided. Contraindicated in neonates ≤28 days receiving IV calcium; in older patients separate infusions by flushing line and avoid simultaneous administration.

What is the severity of this interaction?

The interaction between Calcium Carbonate and Ceftriaxone is classified as Major — avoid combination. Ceftriaxone forms insoluble calcium-ceftriaxone precipitates in the lungs and kidneys, particularly in neonates, causing fatal pulmonary and renal events.

What should I do if I'm prescribed both?

Contraindicated in neonates ≤28 days receiving IV calcium; in older patients separate infusions by flushing line and avoid simultaneous administration. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.