Macrogol and Phenytoin: Drug Interaction Guide

Quick answer: This combination requires caution. Macrogol and Phenytoin can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Macrogol interacts with Phenytoin

Enteral nutrition and bulk laxatives bind phenytoin in the gut, reducing oral bioavailability and producing subtherapeutic plasma concentrations.

What you should do

Separate administration of phenytoin and enteral feeds/laxatives by at least 2 hours; monitor phenytoin levels.

Key facts

Severity

Moderate — caution required

Mechanism

Enteral nutrition and bulk laxatives bind phenytoin in the gut, reducing oral bioavailability and producing subtherapeut...

Action

Separate administration of phenytoin and enteral feeds/laxatives by at least 2 hours; monitor phenytoin levels.

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 Macrogol and Phenytoin together?

With caution. Separate administration of phenytoin and enteral feeds/laxatives by at least 2 hours; monitor phenytoin levels.

What is the severity of this interaction?

The interaction between Macrogol and Phenytoin is classified as Moderate — caution required. Enteral nutrition and bulk laxatives bind phenytoin in the gut, reducing oral bioavailability and producing subtherapeutic plasma concentrations.

What should I do if I'm prescribed both?

Separate administration of phenytoin and enteral feeds/laxatives by at least 2 hours; monitor phenytoin levels. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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