glutathione treatment side effects Injections: Benefits, Cost & Glutathione Injection: Benefits, After Care

Injected vitamin C bypasses the digestive system entirely, providing a well-tolerated alternative for patients who cannot take high-dose oral supplements

Other groups who may benefit include: Patients following gastric surgery (gastrectomy, bariatric procedures) where intrinsic factor production or absorption sites are compromised Individuals with malabsorption disorders such as Crohn's disease, coeliac disease, or chronic pancreatitis Strict vegans and vegetarians with dietary insufficiency, though oral supplementation is usually tried first Elderly patients with atrophic gastritis or reduced gastric acid production Patients on long-term metformin or proton pump inhibitors, which can impair B12 absorption Individuals with nitrous oxide exposure (recreational or medical), which can cause functional B12 deficiency Diagnosis typically involves serum B12 measurement, with levels below approximately 148 pmol/L (though thresholds vary between laboratories) generally indicating deficiency

p120-catenin is essential for maintenance of barrier function and intestinal homeostasis in mice

Aside from that, B12 shots also have higher absorption rates than oral supplements, most of which are lost to urine