Due to differences in genetics and metabolism, people may better tolerate NAC or glutathione
But if you are deficient, correcting that deficiency can restore the energy and metabolic function that low B12 drains, and that can make weight loss easier
Vitamin B12 deficiency is common amongst older adults who do not have enough hydrochloric acid in their stomach to absorb Vitamin B12 naturally, individuals who take stomach acid-altering medications or antibiotics frequently, individuals who have a gastrointestinal conditions, vegetarians/ vegans, and individuals with pernicious anemia
The intramuscular injections causes stinging sensation or a bit sore at the time of injecting only
Ahn E, Lee J, Han J, Lee SM, Kwon KS, Hwang GS
Each vial has its own reconstitution date, and combining them creates uncertainty about the total peptide content and the effective expiration date