Mycology Research Laboratories Ltd.'s Coriolus versicolor powder is a proprietary product of sterilised mycelium and primordia grown on a substrate. The powder is sealed in plastic containers, and its composition ensures it's free from contaminants, pesticides, and heavy metals. Coriolus-MRL biomass has the advantage of preserving the source mushroom's action without any shift, and its energetic components promote mushroom vitality and longevity. Certified Organic by Quality Assurance International, Coriolus-MRL is a pure natural product.