Foods that can be eaten with low potassium include oranges, grapefruit, oranges and bananas, all of which are rich in potassium and have a very good value for replenishing potassium. Hypokalemia is a condition in which the potassium level in the blood is less than 3.5 mmol/L. If hypokalemia is found, it is important to identify the cause of the condition, i.e., what kind of factors are causing the hypokalemia. When hypokalemia occurs, the patient may experience significant weakness and severe hypokalemia may also lead to cardiac arrhythmias. If the hypokalemia is significant, a drug regimen should be used to replenish the potassium, while if the hypokalemia is mild, foods rich in potassium can be taken.