Whats better viagra cialis

Cialis, Viagra & Levitra Comparison for Erectile.

It was introduced in 2003 and is considered a “blockbuster” drug for pharmaceutical company Lilly USA, with sales of around $1.1 billion per year.

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In the fourth quarter of 2013, Cialis was the second most popular ED drug, behind Viagra, which has sales of around $1.2 billion per year.

<strong>Cialis</strong> vs. <strong>Viagra</strong> - Which Is More Effective? - Tadalafil

Viagra or Cialis? Cialis or Levitra? What's Better?

Cialis was the 51 biggest drug in terms of sales for the fourth quarter of 2013, according to

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Unlike the other drugs in its class, which usually last four to six hours, Cialis can work for up to 36 hours.


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