Potassium chloride - what are the side effects?

Potassium chloride side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using potassium chloride and call your doctor at once if you have any of these serious side effects:
confusion, anxiety, feeling like you might pass out;

uneven heartbeat;

extreme thirst, increased urination;

leg discomfort;

muscle weakness or limp feeling;

numbness or tingly feeling in your hands or feet, or around your mouth;

severe stomach pain, ongoing diarrhea or vomiting;

black, bloody, or tarry stools; or

coughing up blood or vomit that looks like coffee grounds.

Less serious side effects may include:

mild nausea or upset stomach;

mild or occasional diarrhea;

slight tingling in your hands or feet; or

appearance of a potassium chloride tablet in your stools. Your Dr should be watching blood levels of potassium to watch for hyperkalemia which is too much potassium. It is the most dangerous effect from taking potassium supplements. Severe hyperkalemai can cause cardiac arrest. If your pulse becomes slow and weak be sure to contact your Dr.