Potassium is an essential mineral and electrolyte that helps your muscles, nerves, heart, and cells work properly. It plays a key role in muscle contraction, nerve signals, fluid balance, and normal heart rhythm. When potassium levels drop too low, the condition is called hypokalemia.
A mild drop in potassium may not cause obvious symptoms. But when potassium falls further, the body can start sending warning signs such as fatigue, muscle weakness, cramps, constipation, tingling, or heart palpitations. MedlinePlus lists fatigue, constipation, muscle weakness or spasms, tingling or numbness, and skipped
