Famotidine and Magnesium Hydroxide: Drug Interaction Guide

Quick answer: Famotidine and Magnesium Hydroxide have a minor interaction — typically manageable with awareness.

Interaction severity: Minor — typically manageable

How Famotidine interacts with Magnesium Hydroxide

Magnesium-containing antacids can reduce famotidine absorption through adsorption and changes in gastrointestinal conditions, modestly lowering famotidine exposure.

What you should do

Separate administration by approximately 2 hours if reduced acid suppression is a concern. No additional monitoring is usually necessary.

Key facts

Severity

Minor — typically manageable

Mechanism

Magnesium-containing antacids can reduce famotidine absorption through adsorption and changes in gastrointestinal condit...

Action

Separate administration by approximately 2 hours if reduced acid suppression is a concern. No additional monitoring is u...

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 Famotidine and Magnesium Hydroxide together?

Usually yes, with awareness. Separate administration by approximately 2 hours if reduced acid suppression is a concern. No additional monitoring is usually necessary.

What is the severity of this interaction?

The interaction between Famotidine and Magnesium Hydroxide is classified as Minor — typically manageable. Magnesium-containing antacids can reduce famotidine absorption through adsorption and changes in gastrointestinal conditions, modestly lowering famotidine exposure.

What should I do if I'm prescribed both?

Separate administration by approximately 2 hours if reduced acid suppression is a concern. No additional monitoring is usually necessary. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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