Vitamin B12 is essential for energy production, nervous system function, and red blood cell formation. However, oral B12 supplementation doesn't work well for everyoneabsorption can be limited by digestive issues, certain medications, Vitamin B12 Shots Confer No Benefit vs. a Supplement Gene Food Vitamin B12 Injection: Benefits, Uses and Who Needs It Periville Pharmacy What are vitamin injections? Vitamin injections deliver essential nutrients directly into the body, meaning faster absorption compared to oral supplements Popular options include: B12 for energy Vitamin C Benefits of Prescription Injectable Vitamins, Minerals, and Amino Acids vs. Oral OTC Versions