Mention generic Viagra and the one think that comes to your mind is sildenafil citrate. This is because; sildenafil citrate pioneered the whole process of treating erectile dysfunction. That was later produced and marketed under the name of Viagra which was followed by its generic version known as generic Viagra. Sildenafil citrate is a PED5 inhibitor that is known to help men in many ways to get rid of erectile dysfunction with the three most marked functions being inhibition of PDE5 and release of cGMP, decreasing the thickness of blood and increase the diameter of arteries. Tadalafil performs the same functions but differs in its results and time of efficacy.
In a manner similar to sildenafil citrate which has Viagra as brand as generic Viagra as its cheaper equivalent, Tadalafil has cialis as its branded version and tadalis as the generic. But the basic function of Tadalafil remains the same as sildenafil citrate; this is also a PDE5 inhibitor. Tadalafil is believed to be as good as sildenafil citrate in terms of efficacy but it can differ in its time of action as the former is known to keep a man active for over 36 hours which comprises of 2 nights.
Another drug that is similar to Viagra and Cialis is Levitra. The key ingredient of this drug is Vardenafil, another PDE5 inhibitor. Viagra and Cialis last in the body for the same period of time, i.e, 8 hours. On the other hand, Tadalafil is known as the weekend drug, the romantic getaway drug and the vacation drug due to its long duration of action.
The drugs are known to make the penile organ become erect. This occurs when the blood vessels, that are responsible for transporting blood to the particular region, increase the supply. The smooth muscles relax and the organ becomes thick and hard, allowing him to have an intercourse.