I have been on the abx regimen since January 2005. I'm not sure that it has assisted my PPMS, yet. However, on reflection, the abx regimen may have controlled my asthma. I have had asthma for about the same length of time as MS (25 years). At its worst, my asthma has been about medium impact, although for the past year or so I have experienced nothing. So, maybe there might be something in the Cpn link to both asthma and MS.