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Multiple SclerosisNovember 2019Summary reviewed August 2026

A Daily Pill Cut MS Relapses by 38% Compared to Standard Injection

People with relapsing multiple sclerosis who took ozanimod, a once-daily pill, had 38% fewer relapses over two years than those getting the standard weekly injection. The pill was also better tolerated, with fewer people stopping treatment due to side effects.

What the trial was testing

The RADIANCE enrolled 1,320 patients with multiple sclerosis. The study was sponsored by Celgene and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

The daily pill reduced MS relapses by 38% compared to the standard weekly injection.

The Lancet. Neurology · 2019 · NCT02047734

These findings — that people taking the daily pill had 38% fewer MS relapses than those on weekly injections — were published in the The Lancet. Neurology and represent the headline result of the study.

Researchers tracked outcomes across 1,320 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with multiple sclerosis, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This treatment is FDA-approved and available now for relapsing MS. If you're currently on weekly injections and struggling with side effects or relapses, talk to your neurologist about whether switching to this pill might help. It worked better than the standard injection in this study and was easier for people to stay on.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.