I mentioned before I've had a niacin type flush, which is very itchy and unpleasant, when I've taken MB12. The itching lasts about a 1/2 hour and the redness an hour. I now know that this only happens when I take the MB12 and I lay with a hot pad on my low back. The nights I take the MB12 without applying heat I don't have a problem. I read that if you drink hot beverages around the time you take niacin it may increase flushing. Any ideas why the combination of MB12 and heat would cause this?
I can only conjecture on this. Mb12 affects the autonomic nervous system that controls contraction and dilation of capillaries. The "signal" comes across stronger with mb12 and while the nerves are still damaged, has some effects. The heat may be provoking the dilation response and it is stronger because of mb12. This may be an explanation. I don't really know. I had all sorts of short term responses that went away in a few months.