Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an erection. This drug does not protect against sexually transmitted diseases (such as HIV, hepatitis B, gonorrhea, syphilis). Consult your doctor or pharmacist for more details. Read the Patient Information Leaflet provided by your pharmacist before you start taking sildenafil and each time you get a refill. If you have any questions, ask your doctor or pharmacist. To treat erectile dysfunction-ED, take this drug by mouth as directed by your doctor, usually as needed. Take sildenafil at least 30 minutes, but no more than 4 hours, before sexual activity (1 hour before is the most effective). A high-fat meal may delay how quickly the drug begins to work. lasix lab values Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. Do not take sildenafil if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as "poppers". Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Some medicines can cause unwanted or dangerous effects when used with sildenafil. Tell your doctor about all your current medicines, especially riociguat (Adempas). Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. Fluconazole nose spray Can i buy levitra in mexico Sildenafil suppository INTRODUCTION Sildenafil citrate 50 mg is the recommended starting dose for men. use*; Purines/administration & dosage; Purines/therapeutic use; Sildenafil. cipro clearance Uses. Sildenafil is used to treat male sexual function problems impotence or erectile dysfunction-EDcombination with sexual stimulation, sildenafil works by increasing blood flow to the. Jan 30, 2012. Sildenafil for pulmonary hypertension This leaflet is about the use of sildenafil for pulmonary hypertension. The length of time Viagra lasts for will vary from person to person, but it can work for up to 5 hours at a time. This doesn’t mean you will have an erection for 5 hours, it means you will be able to get them easier during this time. Most men will find, that the effects of the pill will start to wear off 2 to 3 hours after first taking it. There are some things that will affect how long Viagra will last for in your case. These are listed in the “What will affect how long Viagra lasts for? To make sure Viagra lasts as long as it’s supposed to, you should always give correct information about your current and past health, and details of any medications you are currently taking when starting a course of treatment with Viagra. One study showed that an hour after taking Viagra for erectile dysfunction, men were able to get erections that lasted 33 mins on average. This dropped to 23 mins if they’d taken it 8 hours beforehand and 16 mins if they took it 12 hours beforehand. Sildenafil Sildenafil goes by a variety of names when sold for human use, Revatio being one of them. While it’s often used to treat erectile dysfunction in human males, it also has properties that make it useful in veterinary medicine, though not for the reasons that might first come to mind. Sildenafil is a selective vasodilater that relaxes smooth muscle cells, allowing blood to flow freely to nearby erectile tissue. This tissue can be found in the network of blood vessels between the lungs and heart, parts of the male and female reproductive systems, and a few other locations in the body. Sildenafil Uses in Veterinary Medicine Sildenafil’s effect on the pulmonary vasculature makes the drug so useful in treating animals. In dogs and cats, the drug is most often prescribed to treat heart and lung problems, including pulmonary hypertension resulting from heart failure, pulmonary abnormalities, and cardiac abnormalities. Sildenafil relaxes the lungs, which allows blood to flow more readily, and decreases stress on the heart. 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Chicago—Now that time and experience have established the role of sildenafil nitrate Viagra in the treatment of erectile dysfunction ED.