I take about 150MG of magnesium and 100mg of potassium before bed. The magnesium is Chloride, but in liquid form and causes no laxative effect (but tastes terrible!). It is a product called ReMag. I am sure other forms will work just as well. The potassium is Gluconate as it is PH neutral. Potassium Citrate and Chloride would work just as well. I just get the Gluconate from Walmart as it is cheap and effective.