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Medicines mepolizumabQuestion & answer

mepolizumab · Medicine question

Is mepolizumab known to pass into human breast milk?

iatroX medicinesPublished 8 November 2026

The answer

Answer

It is unknown whether mepolizumab passes into human breast milk, as there are no data regarding its excretion in human milk.

Sources for this answer

Nucala 100 mg solution for injection in pre-filled penGlaxoSmithKline UK · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 11Document updated 12 January 2026

Sources checked 8 November 2026

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mepolizumab

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