Condition Information

Potassium is important for a person's muscles to work effectively, including the heart. Potassium also has a role in regulating blood pressure. Low potassium levels (hypokalemia) can cause weakness as cellular processes are affected. The symptoms include severe muscle fatigue, feeling weak and muscle cramps. If you are on a diuretic medication that causes your body to lose too much potassium, you should contact your doctor immediately.