Even though it is found in many foods, a Vitamin B12 deficiency is still relatively common
Some patients might develop allergic reaction and present with symptoms of rashes, hives, swelling of lips, tongue and throat along with difficulty breathing, chest tightness due to inflamed airways
Some members of this society take high or very high dose oral tablets in stead of injections though this is a tiny minority
Doctors should understand these to help patients deal with insurance issues
Not having sufficient levels of vitamin B12 can lead to health issues such as generalized weakness, numbness, leg stiffness, abnormal gait, memory loss, personality change, and a depressed mood
Biotin is not considered to be toxic, and no tolerable upper intake level has been established