All medicinal mushrooms are sustainably and ethically cultivated on their preferred hardwood log. They're free from grains, additives, radiation, fillers, or excipients including dextrin. The mushrooms undergo rigorous and accurate internal testing (far beyond just Beta-Glucans). All of the mushrooms are tested after harvest, after manufacturing, and then again by a third party prior to packaging.

All products are either certified organic by the USDA, and/or extensively tested for both potency and purity - this includes heavy metals, pesticides and toxins.