I think a lot is down to the individual: their metabolism and so on. For instance I have a very fast metabolism, which is why I am on the skinny side and I noticed improvements very quickly. I have never had anything intravenously. Talking about Cpn, Charles Stratton and Ram Sriram from Vanderbilt tend to advise taking antibiotics for four or five years full time to make sure that everything is cleared. All in all I took abx for four years but only one year of that was full time. I stopped having reactions to the abx way before four years but I was frightened to stop sooner in case the MS started progressing again.
You are right, it is crazy, but I think how you felt before and how you feel now is a guideline, but not entirely: I know someone who stopped after only nine months because he says he felt so well and he thought that taking abx for too long wasn't a good thing. A year later he had a stroke at the age of 35.
An Itinerary in Light and Shadow Completed Dr Charles Stratton / Dr David Wheldon abx regime for aggressive secondary progressive MS in June 2007, after four years. Still improving with no relapses since starting. Can't run but can paint all day.