Checking if a Multiple Sclerosis Medication Passes into Breast Milk

Researchers want to understand how much BRIUMVI™ — a medication used to treat relapsing forms of multiple sclerosis — may pass into breast milk. This study will collect milk samples from women who are already taking this medication for their MS and are actively breastfeeding. The goal is to give mothers and doctors clear information about whether it's safe to breastfeed while using this treatment.

Many women with multiple sclerosis want to breastfeed their babies, but they need to know whether medications used to control their disease could affect their infants through breast milk. This study fills that knowledge gap by measuring exactly how much of the medication appears in milk, helping doctors and mothers make informed decisions.