pet wellbeing - mushroom immune gold - natural alternative immune support for dogs and cats - 8oz (237ml) pet wellbeing mushroom immune gold is a comprehensive, complementary, and alternative therapy. it can be used alone or together with chemotherapy and/or radiation therapy. medicinal mushrooms have gained notoriety for their powerful ability to support the immune system. medicinal mushrooms go beyond regular immune support. many mushroom species have the ability to support the body's innate immune mechanisms, sustaining a stronger and more resilient immunity, and faster recovery. in addition to immune support, certain mushroom species help the body's normal reactions to internal and external stresses, including cellular stress from environmental toxins.