Apart from the known links with aspartame which we know mimic the symptoms of MS, the following may also be linked. Heavy metals, insecticides (DDT, PCB's) hydrocarbons, flukes ingested with meat, or from proximity to family pets, fluoride, SLS, high fat diets, low levels of vitamins and minerals, dental amalgam fillings, medication and over-use of antibiotics and vaccinations. So what can be done - Detox - liver and kidney cleanse. Clean up dental ware and environment and diet. Checking vitamin and mineral levels and taking the appropriate action.  Reducing saturated fats. Checking for mercury poisoning from fillings. Testing for gluten / dairy allergies and, caffeine and cocoa.  Olive Leaf extract has some wonderful healing properties, may be worth investigating. Homeopathic preparations may help, as will gentle hands on therapies such as massage, reflexology, and Flower Essences which help by encouraging positive emotions, also healing may help.

I wish your friend improved health.
 

I had a friend who had MS - she found that Reiki helped her. I also think that Gerson therapy would help - there is evidence that it has helped MS at phase 2. My friend was at phase 1 - she had remissions - and then I couldnt do Reiki on her for a while and she slipped into phase 2 -progressive. I suggest trying Reiki and The Journey (Brandon Bays) and getting the mercury out of your teeth, and look at Gerson - it all helps and it's not that difficult.