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Peak Immune is our preferred dog immune system booster.  Season change is the perfect time to give a little extra support, as all of the animals on the planet go through physical changes during this time.  If you've ever wondered how to boost dog's immune system, you're not alone.  Our pets are exposed to a plethora of environmental and food toxicities. A healthy immune system helps ward off parasite overload and keeps them strong for work or play. Peak Immune herbal dog immune system booster, delivers your dog, cat or horse the best of health in every season.