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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.

View IMPORTANT SAFETY INFORMATION

Lemtrada In The Body

MS is thought to occur when overactive immune cells attack healthy parts of the central nervous system. LEMTRADA is believed to work by targeting many of these cells that may cause relapsing forms of MS. It is not known exactly how LEMTRADA works in MS.

LEARN MORE ABOUT LEMTRADA IN THE BODY

In this video, Dr. Aaron Boster, a board-certified neuroimmunologist, talks about MS and LEMTRADA inside the body.

DURING TREATMENT

LEMTRADA RECOGNIZES
certain immune cells in the body, including those thought to cause relapsing MS.

LEMTRADA identifies certain immune cells

LEMTRADA REMOVES
many of those cells.

LEMTRADA removes many of those immune cells that are thought to cause relapsing MS

AFTER TREATMENT

YOUR IMMUNE SYSTEM
slowly begins to replace the cells that were removed with new cells.

For some people, certain cell types remain below normal levels when they were measured 1 year after treatment.

Immune system replaces the removed cells with new cells