I am a 63-year-old man who suffered from impotence. I say “suffered”, because Cialis has completely cured my dysfunction, and allowed me to enjoy sex life again. My wife is 17 years younger than me and our sex lasts not for ten minutes as it was before, but for an hour and twice per night. Light headache arises if I take a high dose, so I take a generic cialis 20 mg tablet and cut it in half. It keeps me ready for three days... including erection at night and in the morning. My wife is satisfied with the drug.