Tear Stain Bites Soft Chew Supplement

Antioxidants are added to pet foods to prevent oxidation of fats and preserve vitamins and product freshness, commonly used forms include mixed tocopherols (vitamin E), ascorbic acid (vitamin C), and botanical extracts like rosemary. They help reduce cellular oxidative damage and support long-term health in dogs and cats; typical levels in commercial diets are safe and beneficial, though very high supplemental doses or certain synthetic antioxidants (e.g., BHA/BHT) have raised concerns, so consult your veterinarian if considering additional supplementation.

Cranberries are used in pet foods and supplements as a source of fiber and antioxidants (notably polyphenols/proanthocyanidins) and are commonly included for their potential urinary tract–supporting properties in dogs and cats. While these compounds may help inhibit bacterial adhesion in the urinary tract, scientific evidence in pets is limited, and owners should choose unsweetened, preservative-free preparations (avoiding products sweetened with xylitol), watch for gastrointestinal upset or effects on urine pH, and consult a veterinarian for pets with urinary stones or taking certain medications.

Marshmallow (typically the root or extract of Althaea officinalis) is used in pet foods and supplements as a botanical demulcent—its mucilaginous compounds provide gentle, soluble-fiber–like soothing for digestive, urinary, and respiratory mucosa rather than contributing meaningful protein or vitamins. It is generally regarded as safe in small, standardized amounts and may offer mild prebiotic or calming effects, but can alter absorption of some medications and commercial candy forms contain sugars and additives harmful to pets, so veterinary guidance is recommended for therapeutic use.

Vitamin E is a fat‑soluble vitamin and antioxidant commonly added to dog and cat foods both as an essential nutrient and to protect fats and fat‑soluble vitamins from oxidation. It supports immune function, healthy skin and coat, and cellular protection; deficiency is uncommon in complete diets, while excessive supplemental doses are unnecessary and very high amounts may interfere with blood clotting or interact with certain medications.

Fish oil is commonly added to pet foods as a concentrated source of healthy fats—primarily the omega‑3 long‑chain fatty acids EPA and DHA—to boost energy density and palatability. EPA and DHA support skin and coat condition, joint and cardiovascular health, and brain development (cats require preformed DHA), but fish oil is calorie‑dense, can oxidize if not properly stabilized, may contain environmental contaminants unless purified, and high doses can cause gastrointestinal upset or affect blood clotting, so product quality and appropriate dosing are important.