Schedule: Weekly subcutaneous injections for 1248 weeks (clinical trials ranged 3648 weeks) [2]
This is because: B-12 is naturally found in animal products such as meat, eggs, and dairy
If any step breaks down (low stomach acid, lack of intrinsic factor, or gut inflammation), much of the B12 passes through unabsorbed
The 10 mg/mL concentration has become the standard for good reason, and the peptide reconstitution calculator at SeekPeptides can verify your math regardless of which concentration you choose
Because vitamin B12 is water-soluble, excesses will simply leave the body in urine
(The cost of B12 is pennies but the time for nurses to give the injection appears to be the saving here.) Some practices are enclosing diet sheets for patients to learn how to make sure they are eating foods containing B12