Fildena CT 50 mg is marketed as a treatment for erectile dysfunction (ED) and commonly contains sildenafil citrate. It helps increase blood flow to the penis during sexual stimulation. However, men with high blood pressure should take precautions before using it. Some men with well-controlled high blood pressure may be able to use sildenafil safely after medical assessment. Sildenafil can temporarily lower blood pressure, so the risks depend on your cardiovascular health and other medicines.