A lot of the problem with finding papers about “Paradoxical Folate Deficiency/Insufficiency” is semantic. There is no generally agreed upon word or description. Methylcobalamin can also be methylb12, methyl-b12, MeCbl, Mecobl, MeCbl, Mcbl, MB12, co-enzyme b12 and other names coming from a variety of languages. Adenosylcobalamin can be called AdoCbl, cobalamide, cobamamide, co-enzyme b12, AdB12, AB12, Dibencozide (Dibencoplex is a brand name including a trace of Boron in the AdoCbl) and others. The whole problem is complicated by the triage layers within the body as some layers can have fully sufficient l-methylfolate and other layers can have deficiency symptoms. So sometimes the key words to look for is “partial methylation block”, “methylation block”, “methyltrap”, “methyl-trap”, “methylfolate trap”, pseudo folate deficiency, partial folate deficiency, partial folate effectiveness, “inverted U shaped dose response curve” (or many variations of that), even “paradoxical folate deficiency” and then in non peer reviewed literature one sees all sorts of “detox” that comes down to the same sets of folate deficiency symptoms induced by NAC and/or glutathione via methyltrap. The paradoxical folate deficiency as named and described in THE HORSE (a veterinarian medicine Journal) that established the tie to folic acid on a case study looking at a specific horse receiving folic acid and the counter effectiveness, which is why I used it. It seemed the best at capturing the effect I was looking at. So don’t expect to find it by looking for “paradoxical folate deficiency” or “paradoxical folate insufficiency”. “Pseudo folate” is one of the more effective search phrases.