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how much vitamin b12 is in the injection Do You Need a Prescription for Injections? how much are b12 injections
Description
A: It varies by person and lifestyle, but results typically last from one to three weeks

What you tell your doctor about how you feel is very important

After that initial period, it is common to continue injections monthly, though less frequent intervals might be OK if cobalamin blood levels are supportive
I felt a huge improvement overall

After 4 weeks of cobalamin treatment, the concentrations of both metabolites decreased, but not significantly, except for borderline P values in the sublingual group ( P = 0.056 and P = 0.052 for homocysteine and MMA concentrations, respectively)
