Theres a large mismatch when comparing the DV (14-16 mg) to the estimated daily turnover (6000-9000 mg)
The key point: capsules are easier, but injections may be more direct
according to the National Academies of Sciences, Engineering, and Medicine, absorption is approximately 50% at 1 mcg but falls to roughly 1.3% at 1,000 mcg
Its characteristic amino acids glycine , proline , and hydroxyproline make up more than half of its structure and are pivotal for connective tissues
At concentrations of 50100 mM in vivo , C 10 enhances intestinal permeability with only mild and reversible mucosal damage (Wang et al., 2010
Short recap: what not to do after a B12 injection Dont rub, dont do intense exercise for the injection site, dont use heat early on, and be cautious with alcohol