March 11, 2011 Posted by, olivia, viagra vs Levitra. Viagra and Levitra are drugs to combat erectile dysfunction. Both belong to the levitra duration of action levitra levitra for sale duration of action buy real levitra online class of levitra duration of action PDE-5 inhibitors cialis levitra viagra and are approved by FDA. Viagra is more popular among the lot. The underlying mechanism of these drugs is the same. They help to increase levitra duration of action the blood flow and cause erection. Viagra, the chemical compound in Viagra is sildenafil citrate. The drug takes about half an hour to start its course of action levitra duration of action and the effects last for approximately four hours. The dosage required to get the biological action is higher. It is the first approved drug among the PDE-5 inhibitors. PDE-5 inhibitors inhibit the action of phosphodiesterase type 5 which causes degradation of cyclic levitra duration of action GMP in smooth muscle cells. The enzyme is present in the smooth muscle cells of the penis as well as the arterial lining of the lungs. Hence the drug is known to be effective in treating pulmonary hypertension also. Levitra, levitra is the brand name of vardenafil hydrochloride. The drug is primarily used to treat erectile dysfunction and the effects are reported to be lasting long. The duration for the onset of biological action is also low. The drug is effective at smaller doses of 10-20. Contraindications and side effects are known to be reported. Difference between Viagra and Levitra. Drug class both belong to the same class of drugs PDE-5 inhibitors. Mechanism of action they are found to block the degradative action of Phosphodiesterase type 5 on cyclic GMP found in smooth muscle cells of the penis as well as arterial walls of lungs. A high cGMP level allows relax of smooth muscle cells and better flow of blood. The blood flow increases substantially causing the erection. Time for onset of biological action. Both take similar time periods for starting the course of biological action. However, the effects are more pronounced if Viagra is taken atleast 1 hour before sex. Levitra on the other hand levitra v viagra should be taken before half an hour. Duration of efficacy, viagra effects are known to last approximately for four hours whereas cheap levitra samples levitra no prescription L:evitra gives a higher duration lasting up to 6 hours. Approval by FDA- Both drugs are approved by FDA and are prescription drugs. Viagra is sold without prescription also in some countries.

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Treat your levitra reviews erectile dysfunction with one of the most levitra reviews highly effective medications available. Clinical studies continue to levitra reviews prove that Levitra helps more men levitra reviews overcome ED than other treatments. Not only does it have a 75 success rate, but it works faster which reduces performance anxiety. Use our website to levitra reviews quickly compare prices offered by leading online pharmacies. In a matter of minutes, you can scan our price chart, choose the best deal, and place an order to levitra reviews have Levitra shipped directly to your home. It really is that simple! Released in 2003, Levitra was the second oral tablet treatment for ED to arrive on the market, after Viagra in 1998. Like Viagra, Levitra contains an ingredient called a PDE5 inhibitor. Vardenafil works by loosening blood vessels, easing blood flow to the penis. Does this mean that Levitra and Viagra are effectively the same drug? Some men may notice differences in the way these medicines work, and be more suited to one than another. This can make settling on the right medication for erectile dysfunction tricky, particularly for men seeking treatment for the first time. Some may turn to the internet to read Levitra reviews from men who have used it before, to find out more about how well it works, and whether it is likely to cause side effects. Reviews can be a useful tool in helping us to get an idea of what to expect from a product before we buy. However, when reading reviews online for Levitra, or any medicine for that matter, there are some important factors levitra reviews to take into account. The most critical among these is that reading medicine reviews online should never be considered a substitute for discussing a medicine with your doctor. Do online Levitra reviews give an accurate portrayal? Whether online medicine reviews are reliable is a subject of ongoing debate. The majority of reviewers who post online about a particular drug may do so with the best of intentions; to inform others who might, in the future, find themselves in a similar scenario. But there are reasons why online drug reviews may sometimes give a somewhat levitra reviews disproportionate view. The website hosting the review is one factor. For instance, if it has no processes in place to properly curate submissions, or verify users, this might create an inaccurate or distorted account of a medicine. A website can employ certain processes to help ensure the reviews on it are genuine. This might be verifying the IP address of the person leaving the review, to ensure they arent making multiple posts under different names. It might also be getting a member of staff with clinical expertise to moderate or check posts before making them live. The process reviewers are asked to follow can also make a difference. For instance, are they required to provide other information that could have affected their experience of a medicine, such as the dosage they used? Generally, the more detail the poster is asked to provide, the more informative their review will. Polarising opinions, in some cases, reviews may paint a polarising or distorted picture of a medicine for other reasons. For instance, those patients who have had a markedly good experience, or a markedly bad experience, may feel more compelled to go online and leave a review than someone who has had an even or average experience. This can result in a picture of dramatically varying extremes, with little or no middle ground. Clinical trials can help patients to get a more accurate statistical overview of a how well a medicine works, or how likely it might be to cause side effects. These are carried out in a controlled environment, and every patient participating will be asked to provide an account of their experience.


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