Overview Mushrooms can be found growing wild in moist forests on the decaying trunks of fallen trees. These mushrooms have been an important medicine and food source in Asia for thousands of years. Our potent formula combines these medicinal fungi to help support normal immune system functioning. Packaging and Shipping 1 oz., 2 oz., and 4 oz. extracts come in amber glass bottles with a dropper. 8 oz. and 16 oz. sizes come in amber glass with a plastic screw cap and do not include a dropper. These sizes are produced to order. Please allow an additional three days for processing. For educational purposes only This information has not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.