can b12 injections help fibromyalgia Fibromyalgia and nutrition: Therapeutic possibilities? The Benefits Of Trigger Point
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F., Chen, N., Simmler, C., Lankin, D

doi: 10.1210/jc.2011-1256
[1] [4] When B12 is deficient, myelin production is impaired, leading to demyelinationthe breakdown of this protective sheathwhich results in abnormal nerve signalling perceived as pain, tingling, or numbness
Headache in the first 1-3 doses

"Inherited and acquired vitamin B12 deficiencies: Which administration route to choose for supplementation?"
