Research-grade purity should be verified at 99% by HPLC with mass spectrometry confirmation of the approximately 3,985 Da molecular weight
It's also important to remember that if you have Leber's disease, a specific type of B12 called cyanocobalamin could be harmful to your optic nerve
Mitochondrial dysfunction can drive senescence via reactive oxygen species (ROS) accumulation [68, 69], and Tat ( morphine) perturbs mitochondrial function, increasing ROS, protein oxidation, and cytokine release in microglia [60, 70]
J Mol Biol 215:403410
thus, it can circumvent the degradation of dipeptidyl peptidase-4 (DPP-4) and has a prolonged intravenous half-life of 30 min and a 23 h half-life after subcutaneous administration
van Vliet T, Varela-Eirin M, Wang B et al (2021) Physiological hypoxia restrains the senescence-associated secretory phenotype via AMPK-mediated mTOR suppression