I am told that high potasium levels can cause high blood pressure and heart attacks . I shall be moderating my intake therefore . peace Alastair ( [log in to unmask] ) Potassium over-dose can cause terminal cardiac arrhythmias. You're gone before you can begin to react. No symptoms precede the event. Please be advised that Potassium is a *major* electrolyte player in cardiac function. It isn't a good idea to take this medication, particularly if you have any loss of kidney function, without being monitored by your doctor. ----- Mary Ann Ryan RN