BROADCASTS.com

Methylcobalamin is a specific precursor to B12 (cobalamin). It has promising mechanisms by which it could slow ALS progression. Two trials done in Japan suggest that 50mg via intramuscular injection twice weekly can slow ALS progression and prolong survival. Here we discuss the evidence for ultra-high dose methylcobalamin in patients with ALS and conclude that it may offer benefit, but only if administered within the first year of symptoms. If started after the first year, there is no evidence of benefit. It appears reasonably safe.