That being said, coverage for Vitamin B12 injections varies among insurance providers and may depend on medical necessity
Virtually no risk
B12 acts as a cofactor for two important enzymes: methionine synthase, which is involved in DNA production and methylation processes, and methylmalonyl-CoA mutase, which is essential for fatty acid metabolism and energy production
Before using this medication, speak with your doctor or pharmacist about your medical history, especially of low potassium, gout, blood disorders (polycythemia vera), eye disorders (Lebers disease), or other vitamin or mineral deficiencies
Authors and Reviewers Originally written in 2000 by: Jane Higdon, Ph.D
B12 is Found Naturally in Animal Products Vitamin B12 is produced almost exclusively by bacteria and is concentrated in animal foods: beef and lamb (highest density), fish and shellfish (especially salmon, trout, clams), dairy, and eggs