how does vitamin b12 injections work Benefits of for Optimal Health how long before vitamin b12
Description
J Proteome Res 9(7):37103719
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Nevertheless, in cases of severe deficiency with neurological sequelae, we suggest that IM B12 is used in the first instance to replenish body stores with the treatment regimen, including dosage and formulation, optimised to keep the patient free of symptoms and tailored to the metabolic response of not only plasma B12 levels, but also confirmatory testing of homocysteine, methionine, and methylmalonic acid levels

Signs that you may be deficient in B12 may include (but are not limited to): weakness, tiredness, or light headedness, heart palpitations and shortness of breath, nerve problems like numbness or tingling, muscle weakness and loss of appetite/weight loss

PMID 22535170