Drug interactions
Metformin + Norgestimate
Severity: Minor
Metformin and Norgestimate: 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
Norgestimate-containing contraceptives may cause minor changes in glucose tolerance, which could slightly reduce the effect of metformin. Significant loss of control is uncommon.
What this interaction means in plain words
Metformin and Norgestimate 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
Hormonal contraceptives can modestly increase insulin resistance, opposing metformin's glucose-lowering effect.
What to do
Monitor glucose control when the contraceptive is started or stopped and adjust metformin as required.
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
Frequently asked questions
Can I take Metformin with Norgestimate?
MediHelp rates the interaction as minor. Metformin and Norgestimate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Norgestimate-containing contraceptives may cause minor changes in glucose tolerance, which could slightly reduce the effect of metformin. Significant loss of control is uncommon.
How serious is the interaction between Metformin and Norgestimate?
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 glucose control when the contraceptive is started or stopped and adjust metformin as required.
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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