Side Effects of Viagra

Very few drugs work perfectly, and Viagra is no exception. Just about every drug has side effects that arise because the drug is flowing throughout the body and may affect parts of the body unintentionally. For example, aspirin is a drug that relieves pain, but this same drug can also erode the stomach lining and thin the blood. Those are side effects of aspirin.

Viagra has several side effects of which patients need to be aware.

© Generic Viagra
Trouble with your vision? Might be the Viagra.

­The first problem comes because Viagra happens to have a spillover effect. It blocks PDE5, but it also has an effect on PDE6. It turns out that PDE6 is used in the cone cells in the retina, so Viagra can have an effect on color vision.­ Many people who take Viagra notice a change in the way they perceive green and blue colors, or they see the world with a bluish tinge for several hours. For this reason, can’t take Viagra within 12 hours of a flight.

The second problem comes for people who are taking drugs like nitroglycerin for angina. Nitroglycerin works by increasing nitric oxide, and it helps with angina by opening up the arteries that supply the heart with oxygen. If you take nitroglycerin and Viagra together, the increased nitric oxide plus the blocking of PDE5 can lead to problems.

Other problems with Viagra can include little things like headaches (the drug, as a side effect in some men, opens up arteries in the brain’s lining and causes excess pressure) and big things like heart attacks. The possibility of heart attacks is one reason why Viagra is a prescription drug rather than an over-the-counter drug like aspirin. A doctor needs to understand your medical history and make sure that Viagra won’t cause a heart attack. Occasional patients who take Viagra®get painful, long-lasting erections and have to see a doctor to solve the problem.

Finally, there is some concern that some men, especially younger men who take Viagra®recreationally and who don’t really need it for physical reasons, may end up with a dependency on the drug. That is, they may become unable to maintain an erection without taking Viagra.

For more information about side effects, see RxList: Viagra® Side Effects.

What about Cialis and Levitra?
Viagra is a hugely successful drug, and other drug companies wanted a piece of the action. They developed different chemicals to block the PDE5 enzyme and created two new drugs: Cialis (tadalafil) and Levitra (vardenafil).

Because Cialis and Levitra block the PDE5 enzyme, they work exactly the same way as Viagra. They help men who have trouble maintaining an erection because of blood flow problems, and they only work when the man is sexually aroused.

Because they block PDE5 with different chemicals, however, there are some important differences between the three drugs. For example:

• Only Viagra causes color-vision problems.
• Cialis causes muscle aches in about 5 percent of patients.
• Viagra and Levitra last about four hours in the bloodstream. Cialis stays in the bloodstream much longer (it has a 17.5-hour half life) and can therefore be effective for more than a day.

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VIAGRA is a prescription drug that works by increasing blood flow to the penis.

AROUSAL
When a man is sexually stimulated, VIAGRA helps the penis fill with enough blood to cause an erection. After sex is over, the erection goes away. It remains effective for about 12 hours.

During arousal, the arteries in the penis relax and widen, allowing more blood flow into the erectile tissues. These arteries then expand and harden. The veins that carry blood away from the penis become compressed, restricting the blood flow out of the penis. More blood begins flowing in and less flows out, making the penis larger, and causing an erection. Blood must be able to reach and remain in the erectile tissues to maintain erection quality.
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Viagra for the lazy

British pharmacologists have developed an original tool for the treatment of impotence, called by some media «Viagra for forgetful». Unlike other drugs, it is … an aerosol that you want to inhale through the inhaler.

The active component of the drug “VR004″, developed by the pharmaceutical company “Abbott Laboratories”, is apomorfina hydrochloride - the main active substance popular in Europe for the treatment of impotence prepatata “Uptima”. In contrast to the «Viagra», he does not act on the blood vessels of the reproductive organs and nervous system in the regulation of blood circulation.

Preliminary clinical trials “VR004″ showed that on its effectiveness, it is not inferior to more traditional drugs apomorfina, while its effect does not begin after 20-30 minutes, as usual, but after 3-4 minutes after inhalation. Actually, so he got his «informal» name - it can be applied in just a few minutes before it was necessary.

Recall that market drugs for the treatment of impotence is now one of the most profitable sectors of the pharmaceutical market. Annual profits of producers of these funds is around 2.5 billion dollars, and analysts predict a doubling of that figure by 2010.

Viagra for women

Pharmaceutical Company “Procter and Gamble Co.” reported the successful completion of preliminary clinical trials of a unique product, enhances the sexual activity of women. This product will be the first representative of this class of drugs.

The active substances of preparation, called “Intrinsa”, a male sex hormone testosterone. The drug is applied to the skin with a special patch, and operates within a month. Based on preliminary tests, which lasted 24 weeks and which was attended by 533 women, it is sufficiently effective to talk about its widespread use in clinical practice - so, the definition of “increase vozbuzhdaemosti” against the backdrop of taking 49% of the women said, “increase satisfaction from sex “- 51%.

Recall that the problem of drugs for women, similar means to treat male impotence, has already been discussed for some time. However, until recently, all attempts to develop proved unsuccessful - the physiological reaction of the female body is much more complex than the reaction of the body man, so none of the drugs has not been sufficiently effective.

Viagra does not reduce the reproductive function

Pfizer denies that “Viagra” may reduce fertility in men, refuting a recent study which showed that men who made extensive use of this drug to treat impotency, may damage the ability of the sperm fertilize the egg.

“Evidence that the” Viagra “reduces fertility in men, no,” - said the representative of Pfizer.

“It was a lot of clinical trials, as well as 23 million men in the six years of use” Viagra “in the world, and had not received evidence that” Viagra “affects the reproductive function, so we do not attach much importance to the study, - adds a representative of the company.

Researchers from Queen’s University in Belfast found that sperm exposed to “Viagra”, to become more active. But, they said, “Viagra” is also accelerated chemical process known as akrosomnaya reaction, in which sperm develop digestive enzyme that helps them to penetrate through the outer wall of the egg and fertilize it. If this process is completed before the sperm reach the egg, it would make them unable to fertilize eggs.

Bus Lewis, Director of Reproductive Medicine at Queen’s University, calls the result of the study questionable. And according to the representative of ‘Pfizer’, “it is - only one study carried out in vitro, rather than real people.” Viagra “has helped some men to become fathers, helped save the fertility of men who have serious erectile dysfunction.”

Viagra will provide free

Pharmaceutical company Pfizer intends to draw buyers’ free Viagra, reports Reuters. Manufacturer of the drug itself has not yet made such a statement, but the newspaper Wall Street Journal asserts that the plan will be announced in coming days. The company is going to give the seventh “prize package to those who have already bought six. This act Pfizer plans to maintain its share in the segment of products for the treatment of impotence, with the entry of new competitors - drugs Levitra and Sialis Wall Street Journal notes that Viagra will be free only to those who are buying tablets valued at $ 10 each, and not pay them through insurance.

Senator bribe voters Viagra

A major scandal broke out in the Parliament of Brazil. As reported by AP, one of the deputies was dismissed by a court decision in connection with allegations of vote-buying.

A deputy from the state of Bahia, Antonio Jose de Moraes Souza, during his election campaign to bribe the electorate. As a means of agitation the next People’s choice chose the free distribution of world famous cure for impotence - Viagra. Tablets are distributed to people on the streets of the election of deputy members, while not neglecting to recall for whom to cast their votes in elections.

The secretariat deputy already stated that Antonio Jose de Moraes Souza intends to appeal the decision of the court.

People overestimate opportunities Viagra

Men suffering from impotence, often overestimate the effectiveness of modern drugs to treat the disease, including the famous Viagra. Came to this conclusion, researchers from the Royal Hampshire Hospital.

As the results of their polls, which were attended by 40 men over 52 years old, regularly use Viagra, nearly every third case, the drug does not give effect to which it expects the patient. A 10 per cent of cases, according to the pharmacy, the drug did not act.

According to researchers, the constant reassessment of the possibilities for Viagra is linked primarily to its intense publicity in the media. “The manufacturers advertise Viagra as a drug that can cure any patient’s impotence - judging by the TV commercials, one tablet is able to return the old man sexual ability, characteristic of the 25-year-old - said in an interview with a correspondent of” Air Force “Dr. Ann Taylor, Director this study. - This is, of course, increases the sales of the drug, but does not bring any benefit to patients disappointed. “

Viagra for women not

A few months ago the German pharmaceutical company “Pfizer” announced his intention to create a “female” equivalent Viagra - the most popular drug to treat impotence. Unfortunately, pharmacists have been forced to admit that this statement proved to be premature.

According to a new press release, appeared on the website of the group, “Pfizer” to postpone the development of tools for improving sexual function in women. The reason is simple - a women’s version of impotence, which is based on not only physical but also psychological reasons, has proven far more difficult for the medicinal effects of the phenomenon than the classic male impotence, because of the growing disorders of blood circulation in the genital organs. Accordingly, none of the drugs from the group of Viagra did not show sufficient effectiveness for women.

“In order to cope with the” female impotence “medical treatment is clearly not enough - said in an interview to” Reuters “Dr. Joe Fesko, vice-president” Pfizer “. - This requires to deal with each case, establishing a direct cause of irregularities in sexual sphere - and they may be caused by physiological reasons, and some psychological problems, and even features of the relationship with her female partner. Accordingly, the creation of a universal drug, an analog of Viagra would not to be. “