start by taking the pyridoxal-5-phosphate (P5P) form of vitamin B6, 20 to 50 milligrams each day; the methylcobalamin (methyl-B12) and adenosylcobalamin forms of B12, 1 milligram in total each day; and the methyltetrahydrofolate (methyl-folate) form of folate, starting with 0.8 milligrams (and as high as 5 milligrams) each day.
