Because this is a small-molecule salt rather than a peptide, the usual peptide precautions about mechanical shear and methionine or tryptophan oxidation do not apply
Amazon.com : Stacker 2 Pink Lemonade B12 Energy Shot, 2oz (12 Pack) : Health & Household
Section 1833(t)(8)(F) of the Act provides for an adjustment to the beneficiary coinsurance for Part B drugs and biologicals that are not packaged into payment for an OPD service with prices that have increased faster than the rate of inflation beginning April 1, 2023
Taking too much can cause side effects like nausea, headache, dizziness, and, in some cases allergic reactions
Below is a comparison using available clinical evidence
So, while the idea that B12 injections cause weight gain might be a popular rumor, current evidence indicates that a vitamin B12 deficiency is unlikely to affect your weight directly in terms of gain