after being on Iodine for months I added in the niacin Dr. Flechas recommends and within a week had messed my neck up badly. At first I thought it was a crick from jerking my head xpressway driving but it never cleared up. It hurt so bad I would wake up in the middle of the night with migraine like headaches that would relieve once I repositioned my neck. At the same time my teeth also started hurting badly.
I started researching niacin as it was the only thing I added in....could not find anything negative with joints except one forum with a few people mentioning neck problems from it. When I mentioned my neck pain to another friend also experimenting with niacin and Iodine she said she was getting the same thing.
I've no idea what this was about and if it's even related to niacine but think it's something to pay attention to. Flechas told me he'd never heard of this problem and had no complaints from patients....but that assumes his patients make a connection and tell him.