why is vitamin b12 injection so painful Feeling worse after Injection: Answering concerns π Wirral Vitamin B12 Injection
Description
Less common B12 shot side effects include : Chest tightness Skin rash or hives Dizziness Difficulty breathing A blue tint to the skin Call your doc ASAP if you notice any of these negative effects
It depends on the insurance and the patients condition

Journal of Clinical Pharmacy and Therapeutics, 47(4), 543-556

In the body, B-12 helps the bone marrow regenerate red blood cells and has been credited with protection against heart disease and mental deterioration

Drink plenty of water throughout the day, especially after your B12 shot
