Drug interactions
Metformin-pioglitazone + Pegvisomant
Severity: Moderate
Metformin-pioglitazone and Pegvisomant: 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
Pegvisomant lowers IGF-1 and improves insulin sensitivity in acromegaly, which can lower glucose and reduce antidiabetic requirements. Patients on metformin and pioglitazone may have a greater glucose-lowering response and rarely hypoglycemia.
What this interaction means in plain words
Metformin-pioglitazone and Pegvisomant 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.
Metformin-pioglitazone belongs to Endocrine; Pegvisomant belongs to Endocrine.
Why it happens
Growth hormone receptor antagonism reduces insulin resistance, adding to the glucose-lowering effect.
What to do
Monitor blood glucose after starting pegvisomant and reduce antidiabetic doses if glucose control improves substantially.
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-pioglitazone
Other interactions of Pegvisomant
- Alogliptin-metformin + Pegvisomant Moderate
- Alogliptin-pioglitazone + Pegvisomant Moderate
- Chlorpropamide + Pegvisomant Moderate
- Codeine + Pegvisomant Moderate
- Dapagliflozin-metformin + Pegvisomant Moderate
- Ertugliflozin-sitagliptin + Pegvisomant Moderate
Frequently asked questions
Can I take Metformin-pioglitazone with Pegvisomant?
MediHelp rates the interaction as moderate. Metformin-pioglitazone and Pegvisomant 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. Pegvisomant lowers IGF-1 and improves insulin sensitivity in acromegaly, which can lower glucose and reduce antidiabetic requirements. Patients on metformin and pioglitazone may have a greater glucose-lowering response and rarely hypoglycemia.
How serious is the interaction between Metformin-pioglitazone and Pegvisomant?
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 blood glucose after starting pegvisomant and reduce antidiabetic doses if glucose control improves substantially.
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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