That's hardly a dumb question, John. 🙂 It's the same question I was asking myself yesterday while reviewing my labs to see that I have this super-abundance of B6. But what kind of B6, pyridoxal phosphate, or pyridoxine hydrochloride? For the time being, I'm laying off all B6s, both the ones I've been getting in my two supplements (which I know are the "bad" kind) and what I get from my prescription EB-N5 (the hoped-for "good" kind). I'm also going to let both neurologists' offices know what I'm doing so they understand I'm not just another traditional-medicine denier but instead only a concerned patient who still regards all of us––the neurologists, their clinicians, staffs, and me––as members of a team. –Ray