My beloved Doodlebugs RY4 was starting to taste sweet to me. It took several weeks of vaping this before my brain kicked in probably due to the small amount used however once it kicked in it did not go away. I decided to contact DB regarding whether they use sucralose or not. Doots did confirm that he uses sucralose. He did tell me however that he has a sweetener called Erythritol which is supposedly a natural sweetener that he can use instead of sucralose so he sent me a bottle of the RY4 to sample. So far it is definitely a big difference for me in sweetness and will order it with Erythritol going forward. My brain should be happy now.