Try doing a liver/gallbladder flush as soon as you can. I'm doing one Friday night, I'll be glad to be your flushing buddy. After you do your liver flush, begin a parasite cleanse, you can do one of several herbal formulas such as Clarkia , Paragone or Parastroy (and there are many other brands too. I am currently taking tumeric and raw pumpkin seeds as a follow up to the herbal cleanse. I've read some good things about tumeric on the forums. You may also want to do a Bowel Cleanse to make sure your colon is clear. None of these cleanses will interfere with your meds. The Master Cleanse should be safe too unless you have medicines that must be taken on a full stomach.
Meanwhile be very careful about your diet. Avoid all artificial sweetners, I've read where they can actually cause symptoms of MS. Eat as healthy as you can.