Prelizer 2.5 mg is an oral medication containing Lisinopril, an angiotensin-converting enzyme (ACE) inhibitor, at a dose of 2.5 milligrams. It is commonly prescribed for the treatment of high blood pressure (hypertension), heart failure, and for improving survival after heart attacks (myocardial infarction). Lisinopril works by relaxing blood vessels, which helps lower blood pressure, improve blood flow, and reduce the workload on the heart. Prelizer 2.5 mg is often used as a starting dose, especially in patients who are sensitive to ACE inhibitors or have kidney impairment. Regular use can help prevent strokes, heart attacks, and kidney problems. Common side effects may include dizziness, headache, cough, or elevated potassium levels. It should be taken exactly as prescribed and under the guidance of a healthcare provider, with periodic monitoring of blood pressure, kidney function, and electrolytes.