For individuals with digestive conditions, malabsorption issues, or those whove undergone procedures affecting nutrient uptake, injections provide the only reliable B12 delivery method
How Vitamin B12 Actually Supports Energy Production Mitochondria and ATP Every cell in your body runs on ATP adenosine triphosphate and B12 is part of the enzymatic machinery that produces it
What if I take B12 and still feel exhausted
Cost-effectiveness appeals to many users, as a months supply of oral B12 typically costs $5-20 depending on formulation and quality
Two popular options for supplementation are Vitamin B12 injections and oral supplements
For example, one study found that after taking 1,000 mcg of oral vitamin B12, only about 1.3% (13 mcg) is absorbed into the bloodstream