vitamin b12 injection vs oral Injections vs. Supplements: Which is Better? B12 Injections vs. Oral Supplements:

(GP-diagnosed, serum level below 150 pmol/L): Three injections over the first two weeks, then 1000mcg every two to three months

For female subjects, add LH, FSH, and estradiol to establish baseline reproductive hormone function

High oral bioavailability Caco-2 cell assays showed excellent passive and active membrane transport with no detectable efflux (Neelakantan et al., 2018)

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This is a prescription medicine and a medical consultation is a legal requirement before we can prescribe or administer it