The presence or absence of B12 affects both your supplementation strategy and your interpretation of injection site reactions or systemic responses
And the access implications are enormous
Patients with liver disease, malnutrition, or those who consume 3 or more alcoholic drinks every day should use lower doses (2,000 mg daily) or avoid acetaminophen unless directed by their healthcare provider
Jakubiak GK, Cielar G, Stanek A, Nitrotyrosine
Ecotoxicol Environ Saf 244:114079 Fathi FEZM, Sadek KM, Khafaga AF, Al Senosy AW, Ghoniem HA, Fayez S, Zeweil MF (2022) Vitamin D regulates insulin and ameliorates apoptosis and oxidative stress in pancreatic tissues of rats with streptozotocin-induced diabetes
New England Journal of Medicine , 384:9891002