That's just really odd. You shouldn't need anywhere near that amount.
Maybe you're having the wrong expectations from it?
Typically, you "go" first thing in the morning or after breakfast. Then a few minor times throughout the day and it's just mush or water. You're not going to pass normal/solid stools on it.
Are you fasting? When I use it during fasting, I only go in the morning.
The only other suggestion I have is to try emailing or calling their customer support (Always been helpful and knowledgeable when I've emailed..their reps actually know the product and are not Indians from over seas)
Or look into another colon cleansing product. At least Colonix will let you send it back and get your money back if it doesn't work.