http://forums.phoenixrising.me/inde...t-inspired-what-next.32898/page-2#post-538560
I think I can confirm NAC and glutathione quickly removing all B12 from the body from my own experience.
I've been on the Active B12 Protocol since august. One of my symptoms was my hands feeling a bit numb, like wearing gloves. The numbness is gone since starting the protocol and staying on the protocol.
A few weeks ago I decided to try NAC. I won't go into the reason why I tried the NAC here. A few hours after the first 600mg capsule my hands started to go numb again like before I started the protocol. I think this confirms what @@Freddd wrote about NAC in his posts: The NAC, a glutathione precursor, binds to the B12 and you become B12 deficient again instantly.
I took 2 NAC capsules per day for five days before giving up. After that it took weeks for my hands to feel normal again.