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Drug interactions

Insulin isophane protamine human + Somapacitan

Severity: Moderate

Insulin isophane protamine human and Somapacitan: 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

Growth hormone analogs reduce insulin sensitivity and can raise blood glucose, particularly at higher doses. In patients on insulin, glycemic control may worsen after somapacitan is started, and insulin requirements may rise.

What this interaction means in plain words

Insulin isophane protamine human and Somapacitan 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 isophane protamine human belongs to Endocrine; Somapacitan belongs to Endocrine.

Evidence level: Moderate

Why it happens

Growth hormone induces insulin resistance, antagonizing the glucose-lowering effect of insulin.

What to do

Monitor blood glucose more frequently when starting or adjusting somapacitan, and increase the insulin dose as needed.

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 isophane protamine human with Somapacitan?

MediHelp rates the interaction as moderate. Insulin isophane protamine human and Somapacitan 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. Growth hormone analogs reduce insulin sensitivity and can raise blood glucose, particularly at higher doses. In patients on insulin, glycemic control may worsen after somapacitan is started, and insulin requirements may rise.

How serious is the interaction between Insulin isophane protamine human and Somapacitan?

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 or adjusting somapacitan, and increase the insulin dose as needed.

What other medicines interact with Insulin isophane protamine human?

MediHelp also lists interactions of Insulin isophane protamine human with, for example, Ethanol, Pioglitazone, Rosiglitazone. The full list is on the Insulin isophane protamine human page.

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