Also tell your doctor if you or any of your family members have or have ever had an eye disease such as retinitis pigmentosa an inherited eye condition that causes loss of vision or if you have ever had sudden severe vision loss, especially if you were told that the vision loss was caused by a blockage of blood flow to the nerves that help you see. Here are five things you can do today: Quit smoking Eat a balanced diet that decreases blood pressure and controls blood sugar Reduce stress Reduce alcohol consumption Get more sleep Whether you decide to take Viagra or not, taking steps to improve your sex life is an act of self-love. These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir. This boosts blood flow and helps you get an erection from sexual activity. Sildenafil comes as a tablet and suspension liquid to take by mouth. This medicine also works best when you take it an hour before sex on an empty stomach.Q&A Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in adult males* . Why is this medication prescribed? Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. Viagra is usually taken only when .