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what happens if b12 is injected into a vein You Inject Wrong? · PA Relief Vitamin B12 Test: Price, Purpose,
Description
Low serum B12 concentrations and elevated methylmalonic acid [38] are not consistently correlated with the presence or severity of polyneuropathy or the clinical response to B12 treatment [39]

BOMSS recommends hydroxocobalamin 1 mg intramuscular injection every three months as the standard UK approach to B12 supplementation after sleeve gastrectomy

Its been shown that B-12 injections can help raise energy and endurance during exercise

In any case, we do not recommend using expired B12 injections at all
