Your current medications, a blood thinner and cholesterol-lowering combination (Ecosprin Gold 20), a beta-blocker (Metpure XL 50), and a nitrate (Monotrate 60 SR), are standard and highly effective for managing severe coronary artery disease, even without high blood pressure or diabetes. They work together to prevent heart attacks, manage chest pain, and improve blood flow. It is crucial that you continue taking these medications exactly as prescribed. Never stop or change them abruptly, as doing so can be unsafe for your heart. Any adjustments to your therapy should only be made by your cardiologist during your regular follow-up evaluations.