Viagra makes use of methodology No. 3 -- it eliminates the PDE that's decomposing the cGMP, so cGMP builds up in the penis and has a bigger effect on the artery walls.
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The standard dose of Viagra Connect is 50mg of Sildenafil per pill. When Pfizer’s patent ended in 2013, it grew to become authorized for different firms to develop and market their own versions of Sildenafil citrate.
