Hi folks -- I want to let you all know what happened to me when I tried manganese, in case it helps someone, and also to see if any of you have insights. I started with 12.5mg (1/4 of a solaray capsule). That day I had a massage, and I just could not get comfortable. Everything felt like too much pressure, or not the right angle. But that happens sometimes with massage. That night, I was up for several hours trying to get comfortable. Again, this happens to me pretty often. I have a lot of pain. OTOH, insomnia can present as 'too much pain -- can't get comfortable' for me, if I am not sleepy enough to sleep through the pain. Just in case, I took no mn for a few days, and I slept fine. I tried it again yesterday, this time with 6mg. Last night, again problems with pain. And in a weird way. Little oddities of position, or stretching my arm a bit too far, caused a surprising amount of burning pain, that took a long time to fade (like 30 minutes). But my usual background pain was not elevated. Other kinds of discomfort seemed to be affected too -- for example, when my nose was running and I sniffed to clear the passages, the relief was exaggerated. I know manganese can cause neurological problems, so I do not plan on taking any more! Have any of you had similar experiences with it, or do you have an idea what the mechanism for this increased sensitivity could be?