Vidalista Black 80 mg contains a high dose of tadalafil, a medication that relaxes blood vessels to improve blood flow for erectile dysfunction. While effective for many men, this potent vasodilatory effect can be risky for individuals with heart disease. People with conditions such as angina, heart failure, or a history of heart attacks may experience sudden drops in blood pressure, which can trigger dizziness, fainting, or even a heart attack. Additionally, combining Vidalista Black 80 with nitrates—commonly prescribed for heart conditions—can lead to dangerously low blood pressure, which may be life-threatening. Therefore, patients with heart disease must consult a cardiologist before using this medication to ensure it is safe and appropriate for their cardiovascular health. Careful monitoring and dose adjustment may be necessary to avoid severe complications.