Drug interactions
Metformin-pioglitazone + Protriptyline
Severity: Minor
Metformin-pioglitazone and Protriptyline: 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
Tricyclic antidepressants such as protriptyline have occasionally been associated with changes in glycemic control, and additive glucose-lowering has been suggested. The effect is inconsistent and usually small.
What this interaction means in plain words
Metformin-pioglitazone and Protriptyline 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
Possible pharmacodynamic effect on glucose homeostasis; the mechanism is not well established.
What to do
No routine change is needed; check blood glucose when protriptyline is started or stopped in patients whose diabetes is poorly controlled.
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-pioglitazone
Frequently asked questions
Can I take Metformin-pioglitazone with Protriptyline?
MediHelp rates the interaction as minor. Metformin-pioglitazone and Protriptyline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tricyclic antidepressants such as protriptyline have occasionally been associated with changes in glycemic control, and additive glucose-lowering has been suggested. The effect is inconsistent and usually small.
How serious is the interaction between Metformin-pioglitazone and Protriptyline?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed; check blood glucose when protriptyline is started or stopped in patients whose diabetes is poorly controlled.
What other medicines interact with Metformin-pioglitazone?
MediHelp also lists interactions of Metformin-pioglitazone with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Metformin-pioglitazone page.
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