Hi mommychops,
It's very good that you asked about this.
There seems to be an entire industry out there to bilk people with terminal diseases.
You will also see recommendations/services to "detox" PALS of heavy metals, and folks who swear that having mercury fillings removed is the key.
There are at least two "clinics" out there who will "cure" ALS using stem cells. One such is Stem Cell of America which appears to be in California but actually has a clinic in Mexico. One PALS on Facebook has cranked up a GoFundMe site and is asking for donations to fund his treatment.
If any of these 'treatments' actually worked I'm pretty damned sure we'd hear about it.
Beware the snake oil salesmen!