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Active ingredient

Lecanemab

4 finished FDA listings contain Lecanemab as their only active ingredient.

FDA NDC Directory

Ingredient names as written by FDA
LECANEMAB, LECANEMAB-IRMB
Dosage forms
Injection, Solution
Routes
Intravenous, Subcutaneous
Manufacturers / labelers
1
Strengths listed
100 mg/ml · 200 mg/ml
Brand names in FDA listings
Lecanemab Autoinjector, Leqembi

RxNorm (National Library of Medicine)

Ingredient concept RxCUI 2626143

Drugs@FDA applications

Linked only where the FDA listing’s application number matches Drugs@FDA exactly. A listing in the NDC Directory does not by itself mean FDA approval.

ApplicationSponsorOriginal approvalListings
BLA 761269EISAI INC2023-01-062
BLA 761375EISAI INC2025-08-292

Official labeling on DailyMed

Sources: FDA NDC Directory (2026-09-29), RxNorm, Drugs@FDA, DailyMed. Each source’s facts are shown separately as published.