시알리스에 대해 거의 알려지지 않은 사실

Potentially Viagra’s closest cousin, Levitra usually takes a solid hour to kick in and lasts around 4 hours. It’s about as helpful as sildenafil when it comes to raising your sail, though reports have demonstrated Levitra is much more potent and much more selective than sildenafil at inhibiting PDE-5, which means the drug does a much better tas