Drug interactions
Metformin + Paliperidone
Severity: Moderate
Metformin and Paliperidone: 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
Paliperidone may cause hyperglycemia and weight gain, which can reduce the effectiveness of metformin. Glycemic control may deteriorate after the antipsychotic is started.
What this interaction means in plain words
Metformin and Paliperidone 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 belongs to Endocrine; Paliperidone belongs to Central Nervous System.
Why it happens
Antipsychotic-induced insulin resistance and metabolic effects oppose the glucose-lowering action of metformin.
What to do
Monitor blood glucose, HbA1c and weight regularly. Titrate metformin or add therapy if control worsens.
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 Paliperidone
- Ibutilide + Paliperidone Contraindicated
- Paliperidone + Pimozide Contraindicated
- Paliperidone + Vandetanib Contraindicated
- Adagrasib + Paliperidone Major
- Amiodarone + Paliperidone Major
- Amisulpride + Paliperidone Major
Other interactions of Metformin
Frequently asked questions
Can I take Metformin with Paliperidone?
MediHelp rates the interaction as moderate. Metformin and Paliperidone 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. Paliperidone may cause hyperglycemia and weight gain, which can reduce the effectiveness of metformin. Glycemic control may deteriorate after the antipsychotic is started.
How serious is the interaction between Metformin and Paliperidone?
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, HbA1c and weight regularly. Titrate metformin or add therapy if control worsens.
What other medicines interact with Paliperidone?
MediHelp also lists interactions of Paliperidone with, for example, Ibutilide, Pimozide, Vandetanib. The full list is on the Paliperidone page.
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