Dear Lactnetters, I was asked today by a mom who is nursing a 13 1/2 mo. old to find out what I can about the durg Avonex. It is given once a week IM to help slow the progress of Multiple Sclerosis. Her MD wants to prescribe it, (her MS symptoms are worsening) but says she must stop BF first. Neither she nor her baby is ready to wean. I tried Hale '97 and Briggs et al., but could not find any reference by this name? Does anyone have any info on this drug? Thanks. Anne Stiller, RNC, IBCLC