lecanemab · Medicine question

Can lecanemab be used during pregnancy?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Lecanemab should be used during pregnancy only if the potential benefit justifies the potential risk to the foetus, as there are no data on its use in pregnant women.

Sources for this answer

Leqembi 100 mg/mL concentrate for solution for infusionEisai Ltd · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 5Document updated 24 November 2025

Sources checked 8 November 2026

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