Introduction The treatment of cardiovascular diseases often involves complex drug regimens that aim to optimize blood pressure, preserve kidney function, and manage heart failure. Two commonly used drug classes in this domain are Angiotensin-Converting Enzyme (ACE) inhibitors and potassium-sparing diuretics. Each offers distinct therapeutic advantages, especially in conditions like hypertension, chronic kidney disease (CKD), and heart failure. However, when combined, these medications can inadvertently cause a serious and potentially life-threatening complication: hyperkalemia, or elevated potassium levels in the blood. While this drug combination can be effective in controlling disease progression, it requires careful dosing, regular lab monitoring, and patient education…