Hi there,
Have you recently started IP? My first two weeks every drink I had was disgustingly sweet. I'm 8 weeks in now and some drinks still are, but I LOVE the vanilla drink now. It is true what they say; your tastes do change rather frequently on this diet. Especially with the wonky food we're on. One week you'll love something and the next week it might make you gag (I'm experiencing that with the omelets right now). Never be afraid to try things again after a few weeks or even new things you couldn't imaging yourself liking. Our bodies are going through a lot of changes, and these things can happen.