Jen, see the posts here: John's link and others who list the Sxs of B6 toxicity. I had two doubke abnormal high B6 lab results in the last 10 days. Then noticed I was taking 50mg. in my multivit/mineral! That's way too much! Yikes! Slow learner. So much other stuff but I am so hoping getting away from this high dose this helps with the muscle tetany!!