@bb0753, my B6 levels remain high despite assurances from two neurologists' offices I've nothing to be concerned about. Two lab tests, two months apart, both showed high: 114.1 on 10/18 and 72.6 on 12/28. The top of the normal range is 65.2. The lowering by 41.5 in two months was attributed to being advised to halve my daily intake of EB-N5, the medicinal food containing, among other nutrients, B6––but the strain of B6 that (I'd told) does not lead to toxicity (pyridoxal phosphate), unlike the strain that does (pyridoxine hydrochloride). No one has yet stopped me from also taking a daily multivitamin and a B-Complex tab, both of which contain the "bad" strain of B6. I'd like to know how much of my present B6 overload is the "good" B6 and how much is the "bad"? Although I've asked, no one so far has been able to tell me. I've another meeting with one of my neurologists in two weeks and I'm going to ask again, a bit more insistent this time. –Ray (@ray666)