The fruit known for containing a high amount of potassium is the banana. Rich in essential nutrients, bananas are especially noted for their potassium content, which is vital for maintaining proper heart function, muscle contractions, and regulating blood pressure. A medium-sized banana typically contains about 400-450 mg of potassium, making it one of the best natural sources of this important mineral. In addition to potassium, bananas are a good source of vitamins, fiber, and antioxidants, contributing to overall health and well-being, and they are also popular snacks due to their convenient packaging.