Maybe you should settle for 1-2 good long sexual sessions instead of 3-4 short ones? Because if you are talking about 3-4 LONG, I'm only left to be jelous of your energy AND the ammount of free time during the day.
I mean, seriously, why don't you fuck her, make her cum, don't cum yourself, have some oral sex, fuck her, play with toys, fuck her, get it going for an hour and you probably will be satisfyed with less sessions a day. I just REALLY don't think that a healthy man you are who can manage a young girl 1-2 times a day should stuff himself with chemisrty, and I guess that's the concern of your doctor too. Because, frankly, Viagra is meant to be used when you have real problems getting it up, not meant to be used to satisfy your inner march rabbit.
