But it doesn't stop there
However, when investigating acute responses, dose-response relationships with exacting precision, or aiming for maximal therapeutic effect, the injectable form clearly holds an advantage
In many cases, yes, especially if you have gut absorption issues (e.g., IBS, low stomach acid, post-surgery) or if youre already depleted
The big difference is what's inside
The beyond use date for an opened or entered (e.g., needle punctured) multiple-dose container with antimicrobial preservatives is 28 days, unless otherwise specified by the manufacturer
After 3 months of treatment, serum vitamin B12 levels were increased in all 9 patients in whom it was measured (mean increase of 117.4 pg/mL