 [ Symptoms ] i have been having breathlessness and dizziness which has been almost constant i am extremely fatigued and have had occasional chest pains [ Disease ] hi so you are getting b12 injections but yoi still have b1 2 6 and magnesium deficiency have you done a cbc for testing haemoglobin level you must be suffering either malabsorption problem or malnutrition do you have a healthy diet or you have any problem with digestion