This is changing as the medical community increasingly recognizes fibromyalgia as a pain disorder rooted in altered pain processing, with supportive evidence from neuroimaging, quantitative sensory testing, and, in some patients, small-fiber pathology (damage or dysfunction involving small nerve fibers)
If absorption is poor, taking more does not always solve the issue
It has low biological activity and needs to be converted to a more active form by the liver
The chart gives you the established configurations that experienced researchers have validated
Women with preeclampsia have significantly lower vitamin B12 concentrations than normotensive pregnant women (161)
Water soluble vitamins, like B12, can be tolerated at higher doses without adverse effects upon the body, and the National Academy of Medicine has not established an upper limit of Vitamin B12 intake