a b12 injection Compounded Methylcobalamin (Vitamin B12) Injection, 5mg/mL Vitamin B12 Injection Sites: All

44 An open-label, uncontrolled trial in 51 patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) found improvements in 34 patients after 3 months of supplementation with hydroxo-B12, 10 000 mcg twice per week as nasal drops

Food provides a buffer that can decrease direct contact between the supplement and the gastric mucosa, whilst also slowing gastric emptying

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 [6] [8] 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

Youll want to avoid areas with bones and large visible blood vessels, like the back of your hand