Drug interactions
Leuprolide + Metformin-sitagliptin
Severity: Moderate
Leuprolide and Metformin-sitagliptin: moderate 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
Androgen deprivation with GnRH agonists such as leuprolide can reduce insulin sensitivity and worsen glycemic control in men with diabetes. The effect develops over months and may require treatment adjustment.
What this interaction means in plain words
Leuprolide and Metformin-sitagliptin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Leuprolide belongs to Endocrine; Metformin-sitagliptin belongs to Endocrine.
Why it happens
Testosterone suppression increases insulin resistance and adiposity, opposing the action of antidiabetic drugs.
What to do
Monitor HbA1c and fasting glucose periodically during leuprolide therapy and intensify antidiabetic treatment as required.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Metformin-sitagliptin
Other interactions of Leuprolide
- Leuprolide + Pimozide Contraindicated
- Leuprolide + Thioridazine Contraindicated
- Amisulpride + Leuprolide Major
- Arsenic trioxide + Leuprolide Major
- Artemether / lumefantrine + Leuprolide Major
- Disopyramide + Leuprolide Major
Frequently asked questions
Can I take Leuprolide with Metformin-sitagliptin?
MediHelp rates the interaction as moderate. Leuprolide and Metformin-sitagliptin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Androgen deprivation with GnRH agonists such as leuprolide can reduce insulin sensitivity and worsen glycemic control in men with diabetes. The effect develops over months and may require treatment adjustment.
How serious is the interaction between Leuprolide and Metformin-sitagliptin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor HbA1c and fasting glucose periodically during leuprolide therapy and intensify antidiabetic treatment as required.
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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