The first time I ever tried Atkins I noticed a sweet kinda weird taste whenever I drank anything. Haven't noticed it this time around. I wonder if coffee or Nutrasweet has anything to do with that? My very first try at Atkins for the first 2 weeks I was totally clean. No lite beer, no coffee, no nutrasweet, but after induction I started adding in lite beer, low carb yogurt etc... and then that weird taste went away. I'm going clean again, so will let you know if it comes around again.