that is a good Question.....according to the post...although i am not b12 deficient in the blood test b12 does temporialy relieve all the pain and intrinsic factor temp relieves some of the pain...but if i get b12 shots it only last 48 hours then i get teh worst hangover feeling ever. Intrinisc factor last only a few hours at best.
I dont know if ultra clear is free form ...i used to use undenatured whey by jarrows and it used to take alot of the pain away right away but id get massive reflux a few hours later so the nd gave me this or goats whey as an option...
neither alternative work as well but neither have any negatives...except the ultra clear gives me a mild hangover some days. other days it just reduces some of the gut pressure...