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ZEPOSIA is a once-daily pill for adults with relapsing multiple sclerosis (MS).

Take as directed by your doctor if certain liver problems exist.

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ZEPOSIA is a once-daily pill for adults with relapsing multiple sclerosis (MS).

Take as directed by your doctor if certain liver problems exist.

See how ZEPOSIA performed

Explore the results below to see how ZEPOSIA performed. ZEPOSIA was compared to a leading injectable medicine, Avonex® (interferon beta-1a), in two separate clinical studies

Fewer relapses with ZEPOSIA

People had fewer relapses with ZEPOSIA

ZEPOSIA® one-year relapse graphic 1

People taking ZEPOSIA had an Annualized Relapse Rate (ARR) of 0.181 vs 0.350 with a leading injectable.

A total of 895 people were in this study (ZEPOSIA 447, a leading injectable 448).

ARR is the average number of relapses a group of people has in one year.

ZEPOSIA® two-year relapse graphic 1

People taking ZEPOSIA had an Annualized Relapse Rate (ARR) of 0.172 vs 0.276 with a leading injectable.

A total of 874 people were in this study (ZEPOSIA 433, a leading injectable 441).

ARR is the average number of relapses a group of people has in one year.

More people were relapse free*

ZEPOSIA® one-year relapse graphic 2

A total of 895 people were in this study (ZEPOSIA 447, a leading injectable 448).

*A relapse was defined as new or worsening symptoms directly associated with MS that lasted more than twenty-four hours (after having a mostly stable neurological state for at least thirty days).

ZEPOSIA® two-year relapse graphic 2

A total of 874 people were in this study (ZEPOSIA 433, a leading injectable 441).

*A relapse was defined as new or worsening symptoms directly associated with MS that lasted more than twenty-four hours (after having a mostly stable neurological state for at least thirty days).

Disability progression was also measured

ZEPOSIA® disability progression graphic ZEPOSIA® disability progression graphic

This progression was confirmed after 3 months with predefined increases in Expanded Disability Status Scale A method used to measure disability in MS and monitor changes in the level of disability over time. scores and results were combined from both clinical studies.

Fewer lesions in both studies

Fewer new or enlarging lesions (T2) in both studies

T2 (lesions) refers to a type of magnetic resonance imaging (MRI) scan (a T2-weighted image) that can be used to identify the total number of lesions a person has.

ZEPOSIA® one-year T2 lesions graphic

People taking ZEPOSIA had an average of 1.47 lesions (T2) vs 2.84 with a leading injectable.

A total of 895 people were in this study (ZEPOSIA 447, a leading injectable 448).

ZEPOSIA® two-year T2 lesions graphic

People taking ZEPOSIA had an average of 1.84 lesions (T2) vs 3.18 with a leading injectable.

A total of 874 people were in this study (ZEPOSIA 433, a leading injectable 441).

Fewer lesions showing active inflammation (T1 Gd-enhancing)

T1 Gadolinium (Gd)-enhancing lesions are areas of active inflammation that show current MS activity in the brain.

ZEPOSIA® one-year T1 Gd-enhancing lesions graphic

People taking ZEPOSIA had an average of 0.16 lesions (T1 Gd-enhancing) vs 0.43 with a leading injectable.

A total of 895 people were in this study (ZEPOSIA 447, a leading injectable 448).

ZEPOSIA® two-year T1 Gd-enhancing lesions graphic

People taking ZEPOSIA had an average of 0.18 lesions (T1 Gd-enhancing) vs 0.37 with a leading injectable.

A total of 874 people were in this study (ZEPOSIA 433, a leading injectable 441).

Melissa, real ZEPOSIA® patient Melissa, real ZEPOSIA® patient
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I’ve been taking ZEPOSIA for a year now, and my doctor and I are happy with my results.

—Melissa
A real ZEPOSIA patient compensated for her time.
(Individual results may vary.)

Watch Melissa’s story
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Learn about ZEPOSIA safety and side effects

See the side effects that were reported in clinical trials.

Explore safety

About the clinical studies

In two separate clinical studies, a one-year and a two-year study, ZEPOSIA was compared to a leading injectable medicine, Avonex.

Both studies were randomized, meaning participants were chosen randomly to receive either ZEPOSIA or a leading injectable medicine. The studies were also double-blind, so neither the professionals giving the medication nor the people taking it knew which medication was being administered.

Study size

The two clinical studies, when combined, were one of the largest studies to compare one MS medication to another (not a placebo).

Together, the two studies included 1,769 people in total:

ZEPOSIA® clinical studies sizes image

Who was studied

Prior to joining the study, all participants experienced at least one relapse within the past two years and had evidence of T1 Gd-enhancing lesions. T1 Gd-enhancing lesions are areas of active inflammation that show current MS activity in the brain.

The average age across both studies was

ZEPOSIA® clinical studies average age image

In both studies combined, approximately

ZEPOSIA® clinical studies 65% female participants image