Drug interactions
Glipizide-metformin + Willow bark
Severity: Minor
Glipizide-metformin and Willow bark: 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
Willow bark contains salicin, which is converted to salicylate. At large doses, salicylates can enhance sulfonylurea effects and increase the risk of hypoglycemia, though typical willow bark doses deliver limited salicylate.
What this interaction means in plain words
Glipizide-metformin and Willow bark 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
Salicylate displaces sulfonylureas from plasma proteins and has intrinsic glucose-lowering effects at high doses.
What to do
Monitor blood glucose when willow bark is used regularly, particularly at high doses.
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 Glipizide-metformin
Frequently asked questions
Can I take Glipizide-metformin with Willow bark?
MediHelp rates the interaction as minor. Glipizide-metformin and Willow bark have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Willow bark contains salicin, which is converted to salicylate. At large doses, salicylates can enhance sulfonylurea effects and increase the risk of hypoglycemia, though typical willow bark doses deliver limited salicylate.
How serious is the interaction between Glipizide-metformin and Willow bark?
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 willow bark is used regularly, particularly at high doses.
What other medicines interact with Glipizide-metformin?
MediHelp also lists interactions of Glipizide-metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Glipizide-metformin page.
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