hit a vein while injecting b12 Phlebotomist artery during blood draw What Happens If You Inject

If you experience any concerning symptoms while taking B12 supplements, report them to your healthcare provider and consider reporting suspected side effects via the MHRA Yellow Card Scheme (yellowcard.mhra.gov.uk)

Regular monitoring by a healthcare provider is crucial

I definitely have felt a difference, I have more energy- I havent lost any weight but the energy is noticeable throughout the day

However, Adams et al

When to Seek Medical Attention : Seek prompt medical attention if you experience signs of a severe allergic reaction (such as swelling of the face or throat, difficulty breathing) or unexplained chest pain