Hydronol-25 Tablet is a diuretic medication used to treat hypertension, reducing fluid levels and edema associated with heart, liver, kidney, or lung diseases. It can be taken alone or in combination with other medications, and should be taken during the day to avoid nighttime urination. It is part of a treatment program that includes a healthy diet, regular exercise, smoking cessation, moderation of alcohol intake, and weight reduction. Common side effects include headache, nausea, dizziness, and weakness. Consult a doctor if you have kidney or liver disease, pregnant or breastfeeding, or have other medications.