tadalafil (generic cialis®) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. tadalafil is in a class of medications called phosphodiesterase (pde) inhibitors.

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Tadalafil (Generic Cialis®) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Tadalafil is in a class of medications called phosphodiesterase (PDE) inhibitors.