Great li'l piece of technology! I'm 63. Viagra was very hit'n miss with me. I tried Cialis and am so pleased. I'm getting erections, random and intentional, just like I did 30 years ago. I'm harder and can come more often than with Viagra. I have found that I can take just 2 x 20mg tabs a week (one on Friday, one on Tuesday) and I am good for the entire week.