hit a vein while injecting b12 Phlebotomist artery during blood draw .Vastus Lateralis Intramuscular Injection: Safe

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

Lancet Gastroenterol Hepatol

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

Regular monitoring by a healthcare provider is crucial

It occurs when a persons upper airway becomes blocked during sleep, cutting off airflow throughout the night, the National Heart, Lung and Blood Institute says

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)