Yes, I have definitely noticed a change. I absolutely hated mint before IP, so much so that I would use children's toothpaste over a mint flavor. Since being on IP I now add mint to everything. I crave it to freshen my mouth, never in a million years would I have thought that! I also used to love the blueberry cranberry drink when I started and now I can't stomach it...I hope that doesn't happen with the peanut butter puffs