There is generally no clear time frame for how long potassium supplementation will take for weakness to disappear, but symptoms of weakness will disappear when potassium is restored and stabilized within the normal range. Low potassium can lead to muscle weakness, cardiac arrhythmias, etc. and can be life-threatening in severe cases. Low potassium decreases muscle excitability. As potassium is replenished, muscle excitability is restored and symptoms of muscle weakness disappear. Low potassium can be given either intravenously or orally, depending on the severity. For mild low potassium, it can be taken by oral potassium chloride extended-release tablets, for severe low potassium, it can be taken by intravenous potassium supplementation, daily attention should be paid to the management of diet, you can eat more potassium-rich foods, such as bananas, seafood, etc., to avoid diarrhea, vomiting, excessive sweating, and should be consulted in time when it is not suitable, and the medication should be in accordance with the doctor’s instructions.