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Drug interactions

Isocarboxazid + Metformin

Severity: Minor

Isocarboxazid and Metformin: 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

MAOIs can lower blood glucose and may add to the glucose-lowering effect of antidiabetic drugs, although hypoglycemia with metformin alone is uncommon. The effect is generally modest.

What this interaction means in plain words

Isocarboxazid and Metformin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Isocarboxazid belongs to Central Nervous System; Metformin belongs to Endocrine.

Evidence level: Low

Why it happens

MAOIs may improve insulin sensitivity or secretion, producing an additive glucose-lowering effect; the mechanism is not firmly established.

What to do

Monitor blood glucose when the MAOI is started or stopped. Adjust the antidiabetic dose only if glucose control changes.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Isocarboxazid with Metformin?

MediHelp rates the interaction as minor. Isocarboxazid and Metformin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. MAOIs can lower blood glucose and may add to the glucose-lowering effect of antidiabetic drugs, although hypoglycemia with metformin alone is uncommon. The effect is generally modest.

How serious is the interaction between Isocarboxazid and Metformin?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose when the MAOI is started or stopped. Adjust the antidiabetic dose only if glucose control changes.

What other medicines interact with Isocarboxazid?

MediHelp also lists interactions of Isocarboxazid with, for example, 5-HTP, Amitriptyline, Amobarbital. The full list is on the Isocarboxazid page.

Full monographs, dosing and an interaction checker in the MediHelp app

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