Drug interactions
Insulin detemir + Metformin
Severity: Minor
Insulin detemir and Metformin: 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
Metformin and insulin are commonly combined and together lower glucose more than either alone, with a modest increase in hypoglycemia risk. Insulin requirements often fall.
What this interaction means in plain words
Insulin detemir and Metformin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Insulin detemir belongs to Endocrine; Metformin belongs to Endocrine.
Why it happens
Additive glucose lowering: metformin reduces hepatic glucose production and improves insulin sensitivity while insulin lowers glucose directly.
What to do
Monitor blood glucose when starting or stopping metformin and adjust the insulin dose as needed.
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 Insulin detemir
Other interactions of Metformin
Frequently asked questions
Can I take Insulin detemir with Metformin?
MediHelp rates the interaction as minor. Insulin detemir and Metformin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Metformin and insulin are commonly combined and together lower glucose more than either alone, with a modest increase in hypoglycemia risk. Insulin requirements often fall.
How serious is the interaction between Insulin detemir and Metformin?
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 or stopping metformin and adjust the insulin dose as needed.
What other medicines interact with Insulin detemir?
MediHelp also lists interactions of Insulin detemir with, for example, Alogliptin-pioglitazone, Ethanol, Glimepiride-pioglitazone. The full list is on the Insulin detemir page.
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