It is important that you are diagnosed with candida by the medical community before trying Lufenuron or any medicine. ENT's are able to allergy test for overgrowth that may occur in the ears and sinus. Dermatologists are able to recognize skin rashes. A sophisticated Stool analysis exists that can detect it in the GI tract and most recently blood tests are offered that detect candida. If you have tried Lufenuron with no results then it may not be a yeast problem . Also, as food for thought, people get candida overgrowth from disruption of your body's eco-system from use of Antibiotics or diets high in sugars. I have found limiting sugars and carbs beneficial in reducing symptoms while trying to kill off the candida.