how often should you have b12 injections for pernicious anemia Anemia: Genomics and Deficiency B12 Shots & B12 Injections:

IV and short-duration oral trials METAOD001-004 enrolled smaller groups of healthy or obese men with single doses or 1-week dosing across IV (25-400 mcg/kg) and oral (9-54 mg) routes

Possible side effects include mild nausea, headaches, and injection site reactions

B12 tablets are generally well-tolerated with minimal side effects

[2] Grain-based foods can be fortified by having the vitamin added to them

Toxicity is extremely rare

B12 shots take minutes and cost less per session, while IV infusions require 30 to 60 minutes and carry higher price points that reflect their expanded nutrient delivery and medical oversight