Choosing between them comes down to medical history, insurance coverage, supply availability, and the side effect profile that fits your life
This means fast absorption without shots
Its also vital for preventing birth defects and prevents premature graying
Higher-Caution Situations Extra medical supervision is important if you: have a history of reactions to injectable vitamins/cobalamins have significant kidney or liver disease are pregnant or breastfeeding are offered a compounded MIC B12 product without clear labeling of ingredients, concentrations, and compounding source The FDAs overview of compounding helps explain why quality can vary (see Compounding and the FDA: Questions and Answers )
According to various studies, up to 85 percent of patients with vitamin B12 deficiency experience at least one neurological symptom
Most vitamin B12 injections and oral supplements in the United States use a form of vitamin B12 called cyanocobalamin, however this form of vitamin B12 has the toxin cyanide connected to the molecule