reactions persisting beyond 48 hours or involving induration suggest sensitivity to the bacteriostatic water preservative (benzyl alcohol) rather than the peptide itself
B12 can be stored in the body
According to the National Institutes of Health, oral B12 has a 1 to 2 percent absorption rate
Benefits: Supports liver function Cholesterol & blood sugar regulation Supports hormone balance Ingredients: Lipotropics: Methionine and Choline, Methylated B-12 Book Now Peak Performance $29 The Peak Performance injection enhances nitric oxide levels, boosting performance, circulation, and growth hormone production
Arthur Heller, HealthTap There is also the risk of bacterial contamination, which increases as the B12 ages
Cyanocobalamin Drugs (BNF/NICE)