No. Each lot of this product is tested for yeast and mold content and complies with cGMP standards for dietary supplements.
Seeking Health's Selenium contains selenium as SelenoExcell® high selenium yeast, which is derived from "nutritional yeast" - Saccharomyces cerevisiae. However, it is sterilized (killed) before encapsulation. Because the yeast is "inactive" or dead, it is not able to reproduce within the human body, and is not thought to contribute towards yeast Candida albicans or any other yeast or fungal overgrowth.