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Cialis Facts- Molecule Monday

What is Cialis?

Cialis MoleculeLast week our Molecule Monday was the popular Viagra. This week our Molecule Monday is another erectile dysfunction treatment drug named Cialis (Tadalafil). Like Viagra, CialisĀ is a PDE5 inhibitor (inhibits the degradation of cGMP, increasing blood flow to the penis during sexual stimulation). The Cialis molecule was approved by the FDA in 2003, roughly 5 years after Viagra was. It was developed by ICOS, a small biotech firm in the US.
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