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Still not sure how much B12 you should be taking

Some vegetarian foods, including breakfast cereals and energy bars, may be fortified with B-12

and (v) manufacturing processsuch as surface loading and matrix loading systemoffers distinct mechanisms of action in drug encapsulation that vary the drug loading efficiency (Wang et al., 2019)

But this stuff is made by an American company with a real building and a 40ish year history of making stuff in Ohio

In rare cases you may suffer bruising, redness, swelling or itching at the injection site which is normally transient and limited to 48 hours
