Product DetailsProanthozone is an anti free-radical product containing bioflavanol that helps maintain healthy cells throughout the life of your pet. Bioflavanol from grape seed extract is one of the most potent antioxidants known to date. It scavenges free radicals plus inhibits enzymes that break down collagen. Proanthozone is helpful for the immune system, liver/kidney function, allergies and cardiovascular health.For:Cats and DogsBenefits:Inhibits enzymes that break down collagenAids in strengthening the immune systemAids in liver, cardiovascular, and kidney healthHow does Proanthozone work?Proanthozone contains bioflavanol, derived from grape seed extract, one of the most potent antioxidants. Antioxidants are used to maintain organ health by preventing free radical formation. Significant response to this product may not be noticeable for 3 to 4 weeks. Response depends on each pet.Cautions:Proanthozone is intended for intermittent or supplemental use only. If you suspect that your pet has received an overdose of Proanthozone, consult your veterinarian or emergency veterinary clinic immediately.