Edecrin is a diuretic that works in your kidneys to increase the amount of urine your body makes. This helps your body get rid of water. So Edecrin is used to reduce swelling (edema) caused by conditions such as cancer, congestive heart failure, liver disease, and kidney disease. This effect can help your kidneys work better and relieve symptoms such as shortness of breath and swelling in your ankles, feet, hands, or abdomen. Edecrin should not be given to infants.