Drug interactions
Metformin-sitagliptin + Ondansetron
Severity: Minor
Metformin-sitagliptin and Ondansetron: 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
Ondansetron may inhibit renal organic cation transporters and MATE proteins involved in metformin secretion, potentially raising metformin exposure. The clinical relevance appears limited and mainly matters in patients with reduced renal function.
What this interaction means in plain words
Metformin-sitagliptin and Ondansetron 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-sitagliptin belongs to Endocrine; Ondansetron belongs to Gastrointestinal Tract.
Why it happens
Possible inhibition of OCT2/MATE-mediated renal tubular secretion of metformin.
What to do
No routine change is needed; monitor glycemic response and renal function in patients with renal impairment.
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-sitagliptin
Other interactions of Ondansetron
- Apomorphine + Ondansetron Contraindicated
- Ondansetron + Thioridazine Contraindicated
- Ondansetron + Vandetanib Contraindicated
- Adagrasib + Ondansetron Major
- Amiodarone + Ondansetron Major
- Amisulpride + Ondansetron Major
Frequently asked questions
Can I take Metformin-sitagliptin with Ondansetron?
MediHelp rates the interaction as minor. Metformin-sitagliptin and Ondansetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ondansetron may inhibit renal organic cation transporters and MATE proteins involved in metformin secretion, potentially raising metformin exposure. The clinical relevance appears limited and mainly matters in patients with reduced renal function.
How serious is the interaction between Metformin-sitagliptin and Ondansetron?
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; monitor glycemic response and renal function in patients with renal impairment.
What other medicines interact with Metformin-sitagliptin?
MediHelp also lists interactions of Metformin-sitagliptin with, for example, Clozapine, Contrast media, Diatrizoate meglumine / diatrizoate. The full list is on the Metformin-sitagliptin page.
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