first production of viagra
It was said by many users of Viagra that they didn't get the same response from the tiny blue pill if they took it on an empty stomach while makers of Cialis suggested staying away from greasy foods but the ability of Cialis to offer a satisfying erection would not be compromised by a full stomach. Finally, and probably most important, Viagra offered little or no spontaneity as one dose was only good for a mere four hours. Cialis offers an erection for up to 36 hours from only one dose. So, as the numbers start to add up on which is best, Viagra or Cialis, the choice is yours to make. Viagra has a better branded name but it seems that Cialis came in like a lion and corrected all of the issues that Viagra didn't.eDrugstore.Next
Please wait while we load the price list
About Viagra Viagra, an oral therapy for erectile dysfunction, is the citrate salt of Sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). When the sexual stimulation causes local release of Nitric Oxide, inhibition of PDE5 by Sildenafil causes increased level of cGMP in the corpus cavernosum resulting in smooth muscle relaxation and inflow of blood to the corpus cavernosum. Viagra is formulated as blue, film-coated rounded-diamond-shaped tablets and is one of the most commonly sold drug for treating male erectile dysfunction or impotence. It is also used for treating pulmonary arterial hypertension (PAH). The drug was developed by the pharmaceutical company Pfizer. Viagra is also informally known as “Vitamin V” or “the Blue Pill”.
Side Effect 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: 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.