text:  Kobayashi Pharmaceuticals' red yeast, or Benikoji supplements, were said to help lower cholesterol. They were pulled from store shelves in March. A government raid at one of the company's factories a short time later uncovered a potentially poisonous acid produced by mold. The deaths of four people in Japan have already been tied to Kobayashi's products, but one other death has been judged to be unrelated to the pills.