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b12 injection process first time Injecting What happens when you inject vitamin B12? How Long Does It Take
Description
Other patients may take a few days or weeks before noticing a significant difference
In the present study, 18 subjects were assigned to each of the considered two groups to detect a change of 4.7 mol/l in serum levels of homocysteine with 90% power and 5% significance
While some anecdotal reports mention noticing changes within a few weeks, many protocols suggest you should use it for at least 12 weeks to observe more significant results
NPJ Syst Biol Appl
