RENIX FUROSEMIDE 40MG X 100 is a medication used to treat fluid retention (edema) in people with congestive heart failure, liver disease, or a kidney disorder such as nephrotic syndrome. It is also used to treat high blood pressure.Each tablet contains 40mg of Furosemide, an active ingredient that works by increasing the amount of salt and water that the kidneys remove from the blood, which helps reduce fluid retention. This medication should be taken exactly as prescribed by your doctor. Common side effects may include dizziness, headache, nausea, and diarrhea. If you experience any serious side effects, contact your doctor immediately.