A woman tending flowers in her garden
A woman tending flowers in her garden


LEQEMBI® injection is a preservative-free, sterile, clear to opalescent, and colorless to pale yellow solution. LEQEMBI is supplied in single-dose vials per carton as follows1:

LEQEMBI 200-mg vial

200 mg/2mL (100 mg/mL)

  • Single-dose vial with dark grey flip cap NDC 62856-212-01

LEQEMBI 500-mg vial

500 mg/5mL (100 mg/mL)

  • Single-dose vial with white flip cap NDC 62856-215-01

Specialty distributor guide

To reorder LEQEMBI, contact your specialty distributor

This guide lists the specialty distributors that stock LEQEMBI

Storage and handling1

Unopened vial icon

Unopened vial

  • Store in refrigerator at 2°C to 8°C (36°F to 46°F)

  • Store in the original carton to protect from light

  • Do not freeze or shake

Diluted solution icon

Diluted solution

  • After dilution, immediate use is recommended

  • If not administered immediately, store LEQEMBI refrigerated at 2°C to 8°C (36°F to 46°F) for up to 4 hours, or at room temperature up to 30°C (86°F) for up to 4 hours. Do not freeze

Use in specific populations1

No adequate data on LEQEMBI use in pregnant women

There are no adequate data on LEQEMBI use in pregnant women, women who are breastfeeding, or pediatric patients.

Data on geriatric population

For the geriatric population, in Study 1 and Study 2, the age of patients exposed to LEQEMBI 10 mg/kg every 2 weeks ranged from 50 to 90 years, with a mean age of 72 years; 81% were 65 years and older, and 39% were 75 years and older. No overall differences in safety or effectiveness of LEQEMBI have been observed between patients 65 years of age and older and younger adult patients.