With injections, you get a much higher absorption rate without the hassle of taking a daily supplement
Improvements in red blood cell count could take months of regular b12 shots to see improvement
Dose and timing should be set against a confirmed deficiency, not by how you feel on any given week
A once-daily topical spray is far more accessible than clinical microneedling procedures
In a few countries, like Japan and Malaysia, you can buy B12 shots over the counter, even in supermarkets
Certain medications The following drugs can reduce levels of vitamin B12 in your body: Antibiotics -- long-term use can lower vitamin B levels generally Anti-seizure drugs Chemotherapy medicines, especially methotrexate Drugs used to reduce stomach acid, like H2 blockers (Pepcid AC, Tagamet, Zantac) and proton pump inhibitors (Nexium, Prevacid, Prilosec) Metformin (Glucophage) -- taken for diabetes Colchicine -- taken for gout Some cholesterol-lowering medications Other causes You're over 65