Drug interactions
Metformin-sitagliptin + Sulfamethoxypyridazine
Severity: Minor
Metformin-sitagliptin and Sulfamethoxypyridazine: minor 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
Sulfonamide antibacterials can occasionally cause hypoglycemia, and combining them with antidiabetic drugs may add to this risk. Metformin and sitagliptin carry low intrinsic hypoglycemia risk, so the effect is usually small.
What this interaction means in plain words
Metformin-sitagliptin and Sulfamethoxypyridazine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Sulfonamides may stimulate insulin secretion, producing an additive glucose-lowering effect; the mechanism is not firmly established for this pair.
What to do
Monitor blood glucose when starting a sulfonamide, particularly in patients with renal impairment or poor intake.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Metformin-sitagliptin
Frequently asked questions
Can I take Metformin-sitagliptin with Sulfamethoxypyridazine?
MediHelp rates the interaction as minor. Metformin-sitagliptin and Sulfamethoxypyridazine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Sulfonamide antibacterials can occasionally cause hypoglycemia, and combining them with antidiabetic drugs may add to this risk. Metformin and sitagliptin carry low intrinsic hypoglycemia risk, so the effect is usually small.
How serious is the interaction between Metformin-sitagliptin and Sulfamethoxypyridazine?
MediHelp rates it minor, 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 a sulfonamide, particularly in patients with renal impairment or poor intake.
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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