Multiple Sclerosis (MS) Drugs
Avonex ® Unknowns (interferon beta-1a)
Nursing Mothers
It is not known whether Avonex ® is excreted in human milk.
Since many drugs are excreted in human breast milk, and because of the potential of serious adverse reactions in nursing infants, a decision should be made to either discontinue nursing or to discontinue Avonex ®.