четверг, 19 февраля 2009 г.

Important information about Viagra



What is Viagra?

Viagra relaxes muscles 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.

Viagra may also be used for other purposes not listed in this medication guide.


Important information about Viagra

Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and 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"). Taking Viagra with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke, or heart attack. During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of Viagra. Do not take Viagra more than once a day. Allow 24 hours to pass between doses. 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.

Viagra can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking Viagra, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old. It is not clear whether Viagra is the actual cause of vision loss.


How should I take Viagra?

Take Viagra exactly as it was prescribed for you. Do not take it in larger doses or for longer than recommended by your doctor. Follow the directions on your prescription label.

Revatio is usually taken three times each day, about 4 to 6 hours apart.

Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day.

Viagra can help you have an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor's instructions.

During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of Viagra. Store this medication at room temperature away from moisture and heat.

What happens if I miss a dose?

Viagra is used as needed, so you are not likely to be on a dosing schedule.

If you miss a dose of Revatio, 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.


What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine. Overdose symptoms may include chest pain, nausea, irregular heartbeat, and feeling light-headed or fainting.

What should I avoid while taking Viagra?

Avoid drinking alcohol, which can increase some of the side effects of Viagra. Avoid using other medicines to treat impotence, such as alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others), without first talking to your doctor.

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вторник, 9 октября 2007 г.

Top 5 most dangerous roads of the world

1: “Road of Death” - Bolivia

North Yungas Road is hands-down the most dangerous in the world for motorists. This one clearly endangers your life. It runs in the Bolivian Andes, 70 km from La Paz to Coroico, and plunges down almost 3,600 meters in an orgy of extremely narrow hairpin curves and 800-meter abyss near-misses. A fatal accident happens there every couple of weeks, 100-200 people perish there every year. In 1995 the Inter-American Development Bank named the La Paz-to-Coroico route "the world’s most dangerous road."

2: Guoliang Tunnel in Taihang mountains (China)

The wall of the tunnel is uneven and there are more than 30 “windows” of
different sizes and shapes. Some windows are round and some are square, and they range from dozens of metres long to standard-window-size. It is frightening to look down from the windows, where strange rocks hanging form the sheer cliff above and a seemingly bottomless pit lying below. A village, opposite the tunnel, appears to hang on the precipice.

3: Most Dangerous Tourist Hiking Trail (China)

(already reported here)

This is a heavy-tourist traffic area in Xian (Mt.Huashan). See details here.

4: Russian Siberian Road to Yakutsk

The official federal-government highway to Yakutsk, and it is also the only one to get there. This can turn into a major humanitarian disaster during rainy spells, when the usual clay covering of the road turns into impassable mud blanket, swallowing trucks and tractors alike.

Taroko Gorge Road in Taiwan

Another road with tunnels carved in the mountain rock

http://www.linkinn.com/_Top_5_most_dangerous_roads_of_the_world