LEMTRADA is a prescription medicine used to treat adults with relapsing forms of multiple sclerosis (MS). Because of its risks, LEMTRADA is generally used in people who have tried 2 or more MS medicines that have not worked well enough. It is not known if LEMTRADA is safe and effective for use in children under 17 years of age.

Do not receive LEMTRADA if you are infected with human immunodeficiency virus (HIV).

View IMPORTANT SAFETY INFORMATION

Your determination to challenge relapsing MS knows no boundaries.

When it's time to move past your current therapy, LEMTRADA may be your next step. Learn more

Learn more When it's time to move past your current therapy, LEMTRADA may be your next step.

  • LEMTRADA SUPPORT
    MS One to One is a service to help support LEMTRADA (alemtuzumab) patients in their relapsing multiple sclerosis treatment journey

    Get information about relapsing MS, LEMTRADA, and financial assistance from Nurses through our patient support program, MS One to One®.  Learn more

  • LEMTRADA EVENTS

    Reserve your spot at events where you can learn more about treating relapsing MS with LEMTRADA.  Find an event

  • SIGN UP FOR INFORMATION, RESOURCES, AND MORE

    LEMTRADA updates and access to MS One to One® Nurses for 24/7* support and information.  Register now

    *As a member of MS One to One, you'll have access to an on-duty Nurse 24/7.
      Regular MS One to One call center hours are Mon–Fri, 8:30 am–8:00 pm ET.