Many people do not feel symptoms of high potassium. Having too much potassium in your blood can be dangerous. It can even cause a heart attack.

If you do feel symptoms, some of the most common are:

  • Feeling tired or weak

  • Feeling sick to the stomach (nausea)

  • Muscle pains or cramps

  • Trouble breathing, unusual heartbeat, chest pains

If you have trouble breathing or think there could be a problem with your heart, call 911 for emergency help.