ustekinumab · Medicine question

Is ustekinumab excreted in human breast milk?

iatroX medicinesPublished 8 November 2026

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Limited published data suggest that ustekinumab is excreted in human breast milk in very small amounts, but whether it is absorbed systemically after ingestion is unknown.

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STELARA 130 mg concentrate for solution for infusionJanssen-Cilag Ltd (a Johnson & Johnson Company) · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 25Document updated 6 November 2026

Sources checked 8 November 2026

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