Like the other herbals in the Swanson Premium Full Spectrum line, our Triple Mushroom Complex dietary supplement is a 100% pure traditional herbal formula. Nothing fancy, just pure, high-quality, natural whole-herb Shiitake, Reishi and Maitake mushrooms at an affordable price...something you expect from Swanson Health Products. It is sourced from its native location, tested for purity and safety and manufactured under the strictest quality controls. Make the most of your immune system support efforts with Full Spectrum Triple Mushroom Complex.