It's been months and I can't get over 1mg of mb12 and .5-1mg methylfolate. After a few days of that my adrenaline, restlessness, anxiety and tinnitus are through the effing roof. I am still not recovered from severe ativan withdrawal about 3 years ago and when taking methyl donors it seems to ramp up those particular symptoms. That leads me to believe that the mb12 and methylfolate are increasing my glutamate and dopamine. Theanine helps a little but nothing will counter the effects of the methyl donors. I have also cleared sulphates and that didn't help anything.
What is someone in this situation supposed to do?
Here's an article about using higher doses of niacin to help with benzo withdrawal - it is supposed to shorten the withdrawal period and make it much more bearable:
http://orthomolecular.org/resources/omns/v10n09.shtml - niacin stimulates GABA receptors, among other things.
Niacin also helps if someone is overmethylating, which it sounds like you may be doing.
Maybe you should concentrate on trying to completely recover from the Ativan withdrawal (which I know can be very severe) using the above protocol, before attempting the methylation supplements.
Caledonia (mentioned above) recommends timed-release niacin for over-methylation. However, in general time-release is not the best form, especially when taking higher doses, as timed-release niacin in sufficient doses has been linked to liver damage, unlike plain niacin. Also, I've found that regular niacin - not no-flush - is the best form. It helps me with sleep.