b12 en injection Vitamin at a Licensed Pharmacy MIC B12 from Fitish RX Vitamin B12 Injections — Anupa
Description
Research suggests methylcobalamin stays in the body longer while cyanocobalamin may be more easily absorbed, but other studies have found little difference in the two in absorption and retention

Insights into the role of erysipelotrichaceae in the human host (in Eng)

(UKNEQAS issued a B12 treatment Alert instructing doctors to do this - included in some links below)

Physical symptoms like numbness resolve first, usually within 3-4 weeks