Vitamin B12 can be injected directly into the body to help with the growth and development of red blood cells in the most effective manner possible
Untreated vitamin B12 deficiencies can lead to neurological issues or pernicious anemia which can occur when your body does not have enough vitamin B12 to produce the amount of red blood cells it needs
Other reported effects include: Headaches and dizziness Nausea and gastrointestinal discomfort Allergic reactions to B12 formulations (rare) If you experience symptoms suggesting a severe allergic reaction (difficulty breathing, severe rash, swelling of face/throat), seek emergency medical attention immediately by calling 999 or attending A&E
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 )
Benefits of B12 Injections B12 shots offer a wide range of health advantages, particularly for those experiencing a deficiency