b12 injection sq or im Best Vitamin Site: Administering B12 Shots Compounded Hydroxocobalamin (Vitamin B12) Injection

Rare but serious problems can happen, and some medicines might not work right with B12 shots

B12 supports rapid cell division and the formation of the babys neural tube, which becomes the brain and spinal cord

Factors Affecting Dosage Requirements Many things can change how much B12 someone needs

Use with caution in pregnant animals

For example: Fatigue, unexplained weight loss, or abdominal pain may indicate liver disease or cancer Easy bruising, night sweats, or feeling full quickly (early satiety) may suggest a myeloproliferative disorder Swelling in the legs, reduced urine output, or persistent nausea may point to kidney disease In cases of very high B12 from injections (not oral supplements), some people have reported headache, nausea, diarrhea, facial flushing, or skin rash