What are the symptoms of too much potassium?

Potassium overdose is known medically as hyperkalemia. Symptoms include malaise, heart palpitations, and muscle weakness. Unfortunately, this condition is difficult to diagnose because the symptoms are similar to a variety of conditions. The best indicator comes from the patient's circumstances. For example, hyperkalemia is often caused by trauma, renal (kidney) problems, and certain medications (e.g., potassium-sparing diuretics).