Phosphodiesterase Type 5 (PDE5) Inhibitors for the ...

Drug Review Introduction Sildenafil (Viagra), Tadalafil (Cialis) and Vardenafil (Levitra) are the three oral PDE5 inhibitors available in Hong Kong for the treatment of erectile dysfunction (ED) in men. Ever since the introduction of Sildenafilin 1998, and the subsequent introduction of Tadalafil and Vardenafil in Hong Kong in the ................
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