Drug interactions
Metformin + Thyroid desiccated
Severity: Moderate
Metformin 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
Thyroid hormone increases glucose production and metabolic rate, which can worsen glycemic control in patients taking metformin. Changes in thyroid dose may alter diabetes requirements.
What this interaction means in plain words
Metformin 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.
Why it happens
Thyroid hormones increase hepatic gluconeogenesis and glycogenolysis, opposing metformin's glucose-lowering action.
What to do
Monitor blood glucose when thyroid therapy is started, adjusted or stopped, and adjust metformin accordingly.
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?
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Other interactions of Metformin
Frequently asked questions
Can I take Metformin with Thyroid desiccated?
MediHelp rates the interaction as moderate. Metformin 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. Thyroid hormone increases glucose production and metabolic rate, which can worsen glycemic control in patients taking metformin. Changes in thyroid dose may alter diabetes requirements.
How serious is the interaction between Metformin 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 blood glucose when thyroid therapy is started, adjusted or stopped, and adjust metformin accordingly.
What other medicines interact with Metformin?
MediHelp also lists interactions of Metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Metformin page.
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