Hello my mother has very low b12 (109) and her doctors are known to be very bad and I'm very worried. They have been giving her b12 shots (the cycle type not the one the begins with an m) and she goes into paralysis with heart beat irregularities and I think it's because of her potassium dropping but they won't even do a blood test for us to make sure they say she is just complaining (all though she can't move or speak until hours after the shot) I believe she has peenicious anemia and want her to continue treatment since the b12 should eventually work, but this potassium thing is very serious so I had her stop until o figure out how to prevent it. Is there some drink or pill or something with enough potassium to keep her from becoming paralyzed after each shot? The doctors won't believe me or check her potassium or give her an so I want to see if something will help that I could find for her so she can continue her treatment before she completely loses her ability to walk (she has had this for 10 years and is becoming paralyzed from the waist down because they said it was MS even though she tested negatively for MS) they are just now beginning to treat this disease as what it is but they are doing it in such a way I'm worried they might kill her. I'm a scared and worried daughter. I am in college studying physics but also have done a lot in medicine but still no one ever respects my input.