The NuVet Plus helps to rebuild the immune system and fight allergens. Normally with a good quality food and the NuVET Plus you can fight off many allergens. Take a look at your environment too. Sometimes environmental issues will come up and it is a new allergen hitting your pets. See here as NuVET and Zyrtec are highly recommended by many vets for environmental issues – Many VETs offer this Dosage of Zyrtec along with the Natural NuVET supplement http://bulldogvitamins.blogspot.com/2015/07/does-your-dog-have-watery-eyes-itchy.html
