At this point in time, you have to take your treatment into your own hands
I've done research on LDN for my PhD work in immunology and I take it despite having no overt medical problems. It may indeed turn out that many people could benefit from it even if healthy after maybe 35 years old. If I had ALS, I would certainly try LDN. It should be noted that too much, or too little and one tends to lose benefits though it doesn't seen to do any harm. So if you try it, and I would, and I do, and you start to lose effectiveness, you may have to lower the dose or raise it slightly. I wouldn't give up on it!
I would love to hear any stories you have about it!
I would also try forskolin with it (Available at your health food store. Don't underestimate it's potential just because you can buy it over the counter!), and if you are interested I could certainly provide information to justify its potential.
For those that can't get naltrexone, it is NOT a restricted drug so you yourself can buy it and try it.
I don't know why physicians are not at least trying it with their ALS patients since the risk is so minimal and the outcome of the disease itself....well you know that one already.
Make sure that you get USP grade!
Any questions just send me an e-mail.