Also, some members of this site have claimed to have gotten substantial relief from CFS/ME symptoms by using antacids... Recently, Freddd, who has been advocating a methylation protocol similar to richvank's, has been speculating that folic acid may be causing problems for people with CFS/ME that are on these protocols. Well, it seems that both antihistamines and antacids inhibit the absorption of folic acid... I think there might be something important in all this. Hopefully somebody more knowledgeable about the topic can put all of this into proper context.