Experts recommend that patients take specific B12 supplements with about 1,000 micrograms daily for effective results
Older age : Due to changes in dietary nutrient intake (usually from eating less overall) and also decreased production of stomach acid, the elderly tend to have reduced levels of vitamin B12
(Outlines contraindications for niacin therapy, including active peptic ulcer disease, active liver disease with elevated enzymes, hypersensitivity to niacin, and arterial bleeding, as well as monitoring recommendations for blood pressure, glucose, uric acid, etc., due to niacins systemic effects)
Elimination half-life is about 1-2 hrs
Follow-up shots are even faster
People may need B12 injections if they: Have a vitamin B12 deficiency (due to poor absorption, medical conditions, or dietary choices) Are vegetarians or vegans (B12 is mostly found in animal-based foods) Have digestive disorders like Crohns disease, celiac disease, or low stomach acid Are older adults (since absorption decreases with age) Take medications like metformin or proton pump inhibitors that interfere with B12 absorption Have undergone weight-loss surgery, which can affect absorption What are the Benefits of B12 Shots
