The administration of insulin/glucose decreases plasma potassium levels in 15 to 30 minutes after the start of infusion, and duration of action is 2 hours. Salbutamol is the most widely used β2 agonist for hyperkalemia treatment. It is administered by nebulization, has a rapid onset of action, and the effects can be noticed 30 minutes after starting administration. Salbutamol may also be administered intravenously at a dose of 0.5 to 2.5 mg