Ethacrynic acid, commonly known as the water pill, is an oral medication patients can take daily to get rid of excess fluid caused by certain medical conditions. This medication can help lower blood pressure by helping to eliminate fluids from the body.
This medication should be taken exactly as prescribed to reduce the risk of dehydration. Patients should take it either once a day or twice a day, depending on their doctor’s instructions, and should not take extra pills. Even if taken as directed, it may cause dehydration in some patients. Symptoms of dehydration include extreme thirst, general weakness, dizziness or lightheadness and fainting.