Patient/caregiver was educated on precautions to be exercised while taking Vitamin B12 as follows:

  1. Vitamin B12 intake can increase the synthesis of red blood cells in anemic individuals and improve the symptoms of vitamin B12 deficiency anemia. Synthesis of red blood cells can consume the potassium in the body and result in low blood potassium or hypokalemia. Electrolyte loss in individuals with dehydration, diarrhea, and history of diuretic intake, can contribute to the hypokalemia caused by Vitamin B12. Hypokalemia can increase the risk for cardiac arrhythmias and individuals with history of arrhythmias can be at increased risk for exacerbation of the condition, secondary to Vitamin B12 intake. So, the supplement must be cautiously administered, with periodical lab draws ordered for electrolyte levels, mainly potassium. Closely follow for development of signs and symptoms of cardiac arrhythmia, such as, episodes of chest pain, rapid heart rate, palpitations, dizziness, fatigue, reduced exercise tolerance, and exacerbation shortness of breath. Report any such findings to your physician immediately, so that, appropriate changes could be made to your plan of care. Observing compliance with proper rehydration and fluid and electrolyte resuscitation measures recommended can help prevent episodes of hypokalemia and arrhythmias.
  2. If you are prescribed Vitamin B12 for relief of symptoms of anemia, report to your physician regarding any continuing or worsening signs and symptoms of anemia, such as, shortness of breath, poor endurance and exercise tolerance, pale skin, fatigue, weakness, and general malaise.