Hey thanks for your faith in the health care magic.i have gone through your question and understood your problem. I have not heard of sucralose causing yeast infections, but different chemicals may cause various side effects in specific people, so I would not rule that out. I once had a patient who had seizures from aspartame, also hadn t heard about that. Her symptoms cleared up when she stopped the aspartame. The only way to know if the sucralose is causing the yeast infections is to stop taking it and see if it stops happening. The time course is very suggestive of sucralose being the cause. So I would stop taking it. Also check food labels to be sure you are not eating foods that might contain it (especially diet drinks). Hope I have answered your query. If you like my answers and wish me to answer in future, bring it to my attention