Heart palpitations are a rare but serious side effect of extremely high vitamin B12 levels. Individuals may feel their heart fluttering, racing, or pounding in their chest.
These episodes can also be accompanied by shortness of breath or feelings of anxiety, making the experience even more distressing. If heart palpitations or an irregular heartbeat occur, it is crucial to seek medical attention immediately to rule out severe complications.

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.