Superoxide Dismutase (SOD) and catalase (CAT) activities were quantified using the OxiTec SOD and Catalase Assay Kits (BIOMAX, Gyeonggi-do, Republic of Korea), respectively, according to the manufacturers instructions
As such, the buffering agent is as much as 5% on a weight basis of the total composition in some instances
Front Physiol (2016) 7:206
For confirmed and verified purity, our best pick is Koi Peptides, since it retests each batch at an outside lab and posts a dated certificate for each lot
IM B12 injection is especially appropriate when oral supplementation has been inadequate, when absorption is compromised, or when neurological symptoms are present (Stabler, New England Journal of Medicine , 2013)