I don't know if there is direct evidence of MMS effectiveness against ALS. When I was taking my Minister of Health training in the Dominican Republic, Jim Humble was of the opinion that Protocol 2000, with the added use of MMS2/calcium hypochlorite, would likely be effective.
This is a quote off of curezone.org :
"I have a friend with ALS. I asked someone I know who is a medical professional to comment regarding the use of MMS in such a case. This is his response:"
'"To use the biggest word, IF ALS is caused by a virus, MMS may be the best treatment available. The myelin sheath is rich in lipids which would tend to protect elements in the nerve bundle. MMS would stand a better chance of penetrating than other medicaments because of the small size of the molecule. Even so, it may also be very helpful in preventing spread or progression of the disease if transmission to other areas involves passage through the blood. MMS is most effective against micro-organisms in the blood - e.g. malaria, AIDS, but while possibly effective against conditions such as Lymes disease it requires higher dosages for longer periods of time to penetrate to the organisms (borrelia)."'
BTW, I've also read quite a bit about people having success with ALS with (whole plant/oral) Hemp Medicine (see the Rick Simpson videos like Run From The Cure).