There should be a reason his potassium is low. Does he have an eating disorder, or take meds like a diuretic that would deplete him of potassium? He needs a workup to figure it out, and it sounds like he needs to be on a supplement like the previous person stated. If his doctor doesn't look into this, I would find a new doctor. It is not normal to have a low potassium for no reason. Good luck to your brother. Debi
I received my pacemaker/defibulator 2 years ago and have been shocked only once. Ideally your potassium levels should be around 3.6 - 4...in hospital after the shock, I caught a flu bug and lost alot of my potassium through diarrhea and vomitting. My potassium levels went down to 2.3. I take potassium pills that have been perscribed my my cardiologist, three times a day. I don't know of any method of checking out your electrolytes at home. I get my blood done every 2wks. Is your brother on potassium supplements??