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Drug interactions

Insulin aspart + Phenelzine

Severity: Moderate

Insulin aspart and Phenelzine: 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

Monoamine oxidase inhibitors can enhance the glucose-lowering effect of insulin and may increase the frequency or severity of hypoglycemia. Mealtime insulin doses may need to be lowered.

What this interaction means in plain words

Insulin aspart and Phenelzine 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.

Insulin aspart belongs to Endocrine; Phenelzine belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

MAOIs may augment insulin secretion or sensitivity and impair counter-regulatory responses, producing additive hypoglycemia; the exact mechanism is not fully established.

What to do

Monitor blood glucose more frequently when starting, stopping or changing the MAOI dose. Reduce the insulin dose if hypoglycemia occurs.

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?

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 Insulin aspart with Phenelzine?

MediHelp rates the interaction as moderate. Insulin aspart and Phenelzine 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. Monoamine oxidase inhibitors can enhance the glucose-lowering effect of insulin and may increase the frequency or severity of hypoglycemia. Mealtime insulin doses may need to be lowered.

How serious is the interaction between Insulin aspart and Phenelzine?

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 more frequently when starting, stopping or changing the MAOI dose. Reduce the insulin dose if hypoglycemia occurs.

What other medicines interact with Phenelzine?

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

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

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