Drug interactions
Metformin-sitagliptin + Thyroid desiccated
Severity: Moderate
Metformin-sitagliptin 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 hormones can raise blood glucose and increase glucose requirements, which may weaken the effect of metformin and sitagliptin. Glycemic control can also change when thyroid dose is adjusted.
What this interaction means in plain words
Metformin-sitagliptin 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 hormone increases hepatic glucose output and metabolic rate, opposing the effects of antidiabetic drugs.
What to do
Monitor blood glucose when starting or changing the thyroid dose. Adjust the antidiabetic regimen as needed.
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-sitagliptin
Frequently asked questions
Can I take Metformin-sitagliptin with Thyroid desiccated?
MediHelp rates the interaction as moderate. Metformin-sitagliptin 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 hormones can raise blood glucose and increase glucose requirements, which may weaken the effect of metformin and sitagliptin. Glycemic control can also change when thyroid dose is adjusted.
How serious is the interaction between Metformin-sitagliptin 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 starting or changing the thyroid dose. Adjust the antidiabetic regimen as needed.
What other medicines interact with Metformin-sitagliptin?
MediHelp also lists interactions of Metformin-sitagliptin with, for example, Clozapine, Contrast media, Diatrizoate meglumine / diatrizoate. The full list is on the Metformin-sitagliptin page.
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