Animal reproduction studies have not been conducted with Potassium Chloride (Kalium Durules). It is not known whether Potassium Chloride (Kalium Durules) can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. It is unlikely that potassium supplementation that does not lead to hyperkalemia would have an adverse effect on the fetus or would affect reproductive capacity. Potassium Chloride (Kalium Durules) should be given to a pregnant woman only if clearly needed and under physician's guidance with periodic monitoring of serum level.