b12 injection dose for adults monthly Dosage and Frequency: 7 Guidelines vitamin b12 injection dose once

In the stomach, B12 is released from dietary proteins through the action of gastric acid and pepsin and initially binds to a protein called haptocorrin

Long-term use of proton pump inhibitors (omeprazole, lansoprazole) or H2-receptor antagonists (such as famotidine) reduces stomach acid, impairing B12 release from food

common reactions include transient pain, erythema, or pruritus at the administration site, along with mild diarrhea, headache, or nausea in a minority of recipients

Traditionally the dorsogluteal (DG) muscle was used for IM injections but this muscle is in close proximity to a major blood vessel and nerves, with sciatic nerve injury a recognised complication (Small, 2004)

It is essential for DNA repair, cellular survival, and energy metabolism