Between Viagra, Cialis, and Levitra.

Although Viagra becomes the market leader as erection disfunction medicine, it doesn't mean Viagra doesn't has competitor at all. Another medicines that have same function like Viagra are Cialis (contain Tadalafil) and Levitra (contain Vardenafil). They have the same mechanism with Viagra for treat erection disfunction. So, what is the difference with Viagra ?

Cialis (Tadafil) can present longer in the body than Viagra, because Cialis has half-life elimination 17,5 hours (Viagra only has 4-5 hours). Half-life elimination is time that needed for drug become 50 % in our body. It means, in 4-5 hours, Viagra concentration in the body only a half or 50 %, because the rest has been eliminated or excreted out of the body. Imagine, with Cialis, it will be a half in 17,5 hours. But it doesn't mean the patient will erect for 17 hours. The implication, Cialis gives free time for the users. For example, if someone consumes Cialis at 6 pm, but the sexual activity begins at 1 am, Cialis will still able to treat erection disfunction. Compare with Viagra, if someone consumes Viagra at 6 pm, but after 4-5 hours hasn't made sexual activity, drug concentration has been decreased a half or more, so the effect will be decreased too. But the consequence is drug that present in the body longer will have side effect longer too.

Levitra (Vardenafil) is a new one for erection disfunction like Viagra. It's half-life same with Viagra, 4 hours. But the surplus, it's more potent than Viagra, so Lexitra can be used in little dose (10 % of Viagra), and it has specific effect on PDE-5 enzyme, so the side effect smaller.

But in general, Viagra, Cialis, and Levitra have almost the same side effects. They're used very careful for patient with cardiovascular disturbance, especially for patient also consumes antihypertensive. Because, they can decrease blood pressure and even cause death. So, think the benefit and the side effect before use them.


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