Colecalciferol and Hydrochlorothiazide: Drug Interaction Guide

Quick answer: Colecalciferol and Hydrochlorothiazide have a minor interaction — typically manageable with awareness.

Interaction severity: Minor — typically manageable

How Colecalciferol interacts with Hydrochlorothiazide

Colecalciferol increases intestinal calcium absorption, while hydrochlorothiazide reduces renal calcium excretion through effects on distal tubular calcium handling. Together they may modestly increase serum calcium.

What you should do

Routine doses are usually acceptable. Monitor serum calcium in patients receiving high-dose vitamin D or those with renal impairment, hyperparathyroidism, or symptoms of hypercalcaemia.

Key facts

Severity

Minor — typically manageable

Mechanism

Colecalciferol increases intestinal calcium absorption, while hydrochlorothiazide reduces renal calcium excretion throug...

Action

Routine doses are usually acceptable. Monitor serum calcium in patients receiving high-dose vitamin D or those with rena...

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 Colecalciferol and Hydrochlorothiazide together?

Usually yes, with awareness. Routine doses are usually acceptable. Monitor serum calcium in patients receiving high-dose vitamin D or those with renal impairment, hyperparathyroidism, or symptoms of hypercalcaemia.

What is the severity of this interaction?

The interaction between Colecalciferol and Hydrochlorothiazide is classified as Minor — typically manageable. Colecalciferol increases intestinal calcium absorption, while hydrochlorothiazide reduces renal calcium excretion through effects on distal tubular calcium handling. Together they may modestly increase serum calcium.

What should I do if I'm prescribed both?

Routine doses are usually acceptable. Monitor serum calcium in patients receiving high-dose vitamin D or those with renal impairment, hyperparathyroidism, or symptoms of hypercalcaemia. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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