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Drug interactions

Digoxin + Thyroid desiccated

Severity: Moderate

Digoxin and Thyroid desiccated: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Correcting hypothyroidism increases digoxin clearance and volume of distribution, so digoxin effect and concentrations may fall after thyroid replacement is started. Conversely, reducing thyroid dose may raise digoxin levels.

What this interaction means in plain words

Digoxin and Thyroid desiccated can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Evidence level: Moderate

Why it happens

Thyroid hormone increases metabolic rate, renal clearance and distribution of digoxin.

What to do

Monitor digoxin concentration and clinical response when thyroid replacement is started or changed, and adjust the digoxin dose.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Digoxin with Thyroid desiccated?

MediHelp rates the interaction as moderate. Digoxin and Thyroid desiccated can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Correcting hypothyroidism increases digoxin clearance and volume of distribution, so digoxin effect and concentrations may fall after thyroid replacement is started. Conversely, reducing thyroid dose may raise digoxin levels.

How serious is the interaction between Digoxin and Thyroid desiccated?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor digoxin concentration and clinical response when thyroid replacement is started or changed, and adjust the digoxin dose.

What other medicines interact with Digoxin?

MediHelp also lists interactions of Digoxin with, for example, Lily of the valley, Squill, Adagrasib. The full list is on the Digoxin page.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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