Viagra
From Generic Viagra
Generic Viagra
Viagra (Sildenafil) relaxes muscles and increases blood flow to particular areas of the body. It has been estimated that impotence affects 140 million men worldwide. Over half of all men with impotence are thought to have some physical cause. Take Generic Viagra about one hour before you plan to have sex. Viagra can help you get an erection when you are sexually excited, it will not work just by taking the pill. If you take Viagra after a high-fat meal (such as a cheeseburger and french fries), the medicine may take a little longer to start working. A small number of patients have lost eyesight in one eye after taking generic viagra. Generic Viagra is the drug name for the chemically -synthesized sildenafil citrate developed by the pharmaceutical company Pfizer and broadly used today to treat male erectil dysfunction (ED, impotence). This type of vision loss is called non-arteritic anterior ischemic optic neuropathy. Generic Viagra (Sildenafil) is used to treat erectile dysfunction (impotence) and for the treatment of pulmonary arterial hypertension. The remainder are believed to have psychogenic causes of impotence. Medical causes of impotence include diabetes and circulatory, neurological or urological conditions. It works by increasing blood flow to the penis and helps men to achieve and maintain an erection for sexual activity, and used with sexual stimulation to cause erections. Penile erection is caused by the engorgement of the penis with blood. This engorgement occurs when the blood vessels delivering blood to the penis increase the delivery of blood and the blood vessels carrying blood away from the penis decrease the removal of blood. Under normal conditions, sexual stimulation leads to the production and release of nitric oxide in the penis. Nitric oxide then activates the enzyme, guanylate cyclase, which causes the production of cyclic guanosine monophosphate (cGMP). It is the cGMP that is primarily responsible for the erection by affecting the amount of blood that the blood vessels deliver and remove from the penis. Generic Viagra is a blue, film-coated, rounded, diamond-shaped tablets that comes in 25, 50, and 100 mg tablets for treating impotence.Do not take generic viagra if you are using a nitrate drug for chest pain or heart problems. Nitrates include nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, Minitran, Deponit, Transderm-Nitro, others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket). Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). If you are taking alpha-blocker therapy, you should not take a dose of greater than 25 mg of Viagra at the same time (within 4 hours) as your dose of alpha-blocker. Revatio comes in a 20 mg tablet and is used for treating pulmonary arterial hypertension. If you have a condition that might result in long-lasting erections, such as sickle cell anemia, multiple myeloma (a disease of the bone marrow), or leukemia, use Viagra with caution. Also use cautiously if you have a genital problem or deformity such as Peyronie's disease. Viagra is used as needed, so you are not likely to miss a dose. If you miss a dose of Viagra, take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose. Viagra (Sildenafil) was synthesized by a group of pharmaceutical chemists working at Pfizer's Sandwich, Kent research facility in England. Viagra comes in different doses (25 mg, 50 mg and 100 mg). It was initially studied for use in hypertension (high blood pressure) and angina pectoris (a form of ischaemic cardiovascular disease). Generic Viagra is effective as an oral treatment because of its rapid absorption, short half-life, and minimal effect on heart rate and blood pressure. Some medical groups claim up to a 98% success rate. Phase I clinical trials under the direction of Ian Osterloh suggested that the drug had little effect on angina, but that it could induce marked penile erections. Pfizer therefore decided to market it for erectile dysfunction, rather than for angina. There are two ways to answer the question of how generic viagra works. Here's the short answer: Generic Viagra blocks an enzyme that prevents erections from happening. The longer answer is: When sexual stimulation and arousal occur, they cause a chemical called cyclic GMP to be produced. Sildenafil citrate, sold under the names Viagra, Revatio and under various other names, is a drug used to treat male erectile dysfunction (impotence) and pulmonary arterial hypertension (PAH), developed by the pharmaceutical company Pfizer. The drug was patented in 1996, approved for use in erectile dysfunction by the Food and Drug Administration on March 27, 1998, becoming the first pill approved to treat erectile dysfunction in the United States, and offered for sale in the United States later that year. Cyclic GMP creates erections by causing the arteries of the penis to expand and the veins to narrow. You may be recommended the lowest dose (25 mg) of Viagra if you are older than age 65, or have serious liver or kidney problems, or you are taking protease inhibitors. In other words, it creates a "traffic jam" of blood in the penis with blood entering faster than it leaves. That's what causes the penis to get hard. Viagra stops an enzyme that attacks cyclic GMP, so more cyclic GMP can accumulate in the man's penis. Part of the physiological process of erection involves the parasympathetic nervous system causing the release of nitric oxide (NO) in the corpus cavernosum of the penis. NO binds to the receptors of the enzyme guanylate cyclase which results in increased levels of cyclic guanosine monophosphate (cGMP), leading to smooth muscle relaxation (vasodilation) of the intimal cushions of the helicine arteries, resulting in increased inflow of blood and an erection. With more cyclic GMP present, generic viagra causes the normal expanding of the arteries and narrowing of the veins which produces an erection. As long as it was and still is FDA aproved Viagra is declared safe to use. Everyone wants to take Generic Viagra...the little blue miracle. But read this article before starting the treatment.
