Leqembi

Lecanemab · Eisai Inc.
PRESCRIPTION ONLY (USA)

Leqembi ingredients

Active ingredientStrength
Lecanemab100 mg/mL

What Leqembi is used for

Leqembi is a specialist medicine (amyloid beta-directed antibody). Its approved uses are listed on the official FDA label below.

Key facts

Brand
Leqembi
Generic name
Lecanemab
Made by
Eisai Inc.
Forms
Injection, Solution
Given
Intravenous
Drug class
Amyloid Beta-directed Antibody
FDA approval
Biologic licence (BLA) BLA761269
On the US market since
2023

Official information

Specialist medicine: started and supervised by a specialist doctor or hospital. This page is a plain-language summary of public official information, not medical advice; follow your doctor and the official product information.

Common questions

What is Leqembi?

Leqembi (Lecanemab) is a specialist medicine made by Eisai Inc., approved by the US FDA.

What are the ingredients of Leqembi?

Leqembi contains Lecanemab (100 mg/mL).

From the FDA National Drug Code directory (open.fda.gov, public domain). Page made 5 November 2026 by Satya Babu.

← All specialty medicines, USA

For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.