NK-9 AHCC Immune System Support for Pets contains 30 capsules per bottle. It has an active ingredient of AHCC hybridized mushroom extract per capsule. NK-9 is so strong that it commands your pet s Natural Killer cells or NK-cells to destroy deadly invaders while at the same time it supports peak activity of other key immune white blood cells like T-cells B-cells and macrophages. Allergies to mushrooms are most often associated with exposure to mushroom spores which originate in the top of the mushroom called the fruiting body. As part of the manufacturing process the raw material in AHCC is subjected to a fermentation process that breaks down the high molecular weight and tough-to-digest molecules found in mushrooms into low molecular weight compounds which further lowers any allergenic potential. American BioSciences is working with universities and research organizations around the world to bring new natural-therapy options to consumers and the doctors and retailers who support those individuals. Our products are available in the United States and internationally. We have several outstanding natural health supplements that are currently available and many others in the final stages of research development and approval which we look forward to making available in the near future.