Betalucil generic name is metoprolol tartrate tablets and Viagra generic name is sildenafil tablets, you should not take sildenafil tablets while taking metoprolol tartrate tablets. Metoprolol tartrate tablets is a receptor blocker, has the effect of blocking sympathetic nervous tension, protect the heart, inhibit blood vessels, usually used in the treatment of high blood pressure, angina pectoris, chronic heart failure can be symptomatic, sildenafil tablets are usually used in the treatment of erectile dysfunction. Metoprolol tartrate tablets and sildenafil tablets should not be taken at the same time, taking them together may cause a sharp drop in blood pressure, atrial fibrillation and other symptoms. Adverse effects of Metoprolol Tartrate Tablets include slowing of heart rate, conduction block, lowering of blood pressure, worsening of heart failure, Raynaud’s phenomenon, fatigue, dizziness and nausea, stomach pain and other discomforts. Contraindications to metoprolol tartrate tablets include: second or third degree atrioventricular block, decompensated heart failure, clinically significant sinus bradycardia, sick sinus node syndrome, cardiogenic shock, and hypersensitivity to any of the ingredients in this product. Adverse reactions to sildenafil tablets include headache, facial flushing, stomach upset, abnormal vision, nasal congestion or runny nose, back pain, muscle pain, nausea, dizziness, and rash. It is contraindicated in patients with known hypersensitivity to any of the ingredients in this product. It is recommended that the drug be used in a standardized manner under the guidance of a professional doctor, and not be used blindly on its own to avoid aggravating the condition.