DearCustomer Are you asking because you are on a potassium depleting diuretic?
Dear Byx... If there is no medical reason for potassium being lost, supplementation is usually not needed or recommended. You could have your blood tested for a deficiency to see where you stand. There are potassium supplements on prescription which give the dosing. In the over the counter realm, there are several types of potassium salts such as KCL, KHCO3, K in amino chelate (K is the chemical symbol for potassium) and I would not take more than 100mg, this amount is not potentially harmful but I would be concerned about larger doses. Just for comparison the RDA for K is 2000mg/day.
I hope this is the information you are looking for.