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Drug interactions

Lonapegsomatropin + Pirfenidone

Severity: Minor

Lonapegsomatropin and Pirfenidone: 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

Growth hormone may increase CYP450 activity, including CYP1A2. This could lower pirfenidone concentrations and reduce its antifibrotic effect, though the clinical significance is uncertain.

What this interaction means in plain words

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

Lonapegsomatropin belongs to Endocrine; Pirfenidone belongs to Miscellaneous.

Evidence level: Low

Why it happens

Growth hormone may induce CYP1A2, increasing pirfenidone clearance.

What to do

No routine adjustment is needed; monitor clinical response and lung function in pirfenidone-treated patients starting or stopping growth hormone.

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 Lonapegsomatropin with Pirfenidone?

MediHelp rates the interaction as minor. Lonapegsomatropin and Pirfenidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Growth hormone may increase CYP450 activity, including CYP1A2. This could lower pirfenidone concentrations and reduce its antifibrotic effect, though the clinical significance is uncertain.

How serious is the interaction between Lonapegsomatropin and Pirfenidone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine adjustment is needed; monitor clinical response and lung function in pirfenidone-treated patients starting or stopping growth hormone.

What other medicines interact with Pirfenidone?

MediHelp also lists interactions of Pirfenidone with, for example, Carbamazepine, Ciprofloxacin, Fluvoxamine. The full list is on the Pirfenidone page.

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