ʻO Sildenafil, he lāʻau lapaʻau kaulana i hoʻohana ʻia no ka mālama ʻana i ka erectile dysfunction i nā kāne. Akā he aha ka sildenafil a pehea e hana ai? E ʻimi kākou i ka ʻepekema ma hope o kēia lāʻau hoʻololi.