Drug interactions
Metformin + Testosterone
Severity: Minor
Metformin and Testosterone: 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
Testosterone may improve insulin sensitivity and modestly add to metformin's glucose lowering. Clinically important hypoglycemia is unlikely.
What this interaction means in plain words
Metformin and Testosterone 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 belongs to Endocrine; Testosterone belongs to Endocrine.
Why it happens
Possible additive effect on insulin sensitivity.
What to do
Monitor glucose when testosterone therapy is started or changed. Dose changes are rarely 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 Metformin
Other interactions of Testosterone
- Testosterone + Warfarin Major
- Androstenedione + Testosterone Moderate
- Betamethasone + Testosterone Moderate
- Carbamazepine + Testosterone Moderate
- Corticotropin + Testosterone Moderate
- Cortisone + Testosterone Moderate
Frequently asked questions
Can I take Metformin with Testosterone?
MediHelp rates the interaction as minor. Metformin and Testosterone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Testosterone may improve insulin sensitivity and modestly add to metformin's glucose lowering. Clinically important hypoglycemia is unlikely.
How serious is the interaction between Metformin and Testosterone?
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 when testosterone therapy is started or changed. Dose changes are rarely needed.
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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