Antioxidants play a key role in supporting a dog’s immune system, skin and coat health, joint comfort, and overall vitality. This guide highlights five well-regarded dog antioxidant supplements, summarized in a quick reference table. Each product is selected for its nutrient-rich, real-food ingredients or scientifically backed blends designed to bolster your dog’s resilience against everyday stressors. Browse the options to match your dog’s size, age, and health goals.
| Product | Brand | Key Benefit | Size |
|---|---|---|---|
| Natural Berry Antioxidant Topper | Natural Dog Company | Immune support, coat health | 8 oz |
| Zesty Paws Multivitamin Treats | Zesty Paws | Joint support, immune boost, digestion | 90 treats |
| Nzymes Antioxidant Treats | Nzymes | Antioxidant enzymes for joints and skin | 60 treats |
| POPPAW Daily Multivitamin | POPPAW | Energy, immune, gut health | 75 scoops |
| Longevity+ Dog Health Supplement | Petlio | Cellular health, longevity support | 30 days |
Natural Berry Antioxidant Topper For Dogs

The Natural Berry Antioxidant Topper combines real fruit-based antioxidants with a nutrient-dense blend to support immune function and coat health. Formulated as a meal topper, it adds extra vitamins and minerals from blueberries, cranberries, raspberries, strawberries, and blackberries. The product emphasizes holistic nutrition with more than 60 nutrients from real foods, helping dogs maintain vitality across life stages. It is designed to complement a dog’s regular diet, promoting skin health, a shiny coat, and overall wellness through natural antioxidant-rich ingredients.
Zesty Paws Multivitamin Treats

These multivitamin treats combine joint support with immune-boosting vitamins A, C, and E, alongside Cod Liver Oil for a holistic approach to canine health. The product also features a six-strain gut health blend with 500 million CFU per chew, supporting digestive balance and nutrient absorption. The formula is grain-free and designed to help maintain healthy skin and a strong coat while promoting resilience against everyday health challenges in dogs of various ages and sizes.
Nzymes Antioxidant Treats

Nzymes Antioxidant Treats focus on enzyme-rich chews that provide antioxidant protection to support joint mobility and energy production. The product highlights its compatibility with natural chemistry to assist hip and joint function, with benefits extending to coat health and skin comfort. Regular consumption is positioned to support aging dogs, helping to maintain activity levels and vitality through antioxidant enzymes that complement the body’s defenses against oxidative stress.
POPPAW Daily Multivitamin For Dogs

POPPAW offers an all-in-one dog multivitamin designed to consolidate daily energy support, antioxidant benefits, immune function, and essential vitamins and minerals into a single scoop. The formula includes CoQ10, L-Carnitine, and B-vitamins to support heart health and sustained energy. A robust probiotic component—3.6 billion daily—aims to optimize gut health and immune resilience, helping dogs adapt to environmental changes while maintaining an active lifestyle.
Longevity+ Dog Health Supplement

Longevity+ emphasizes cellular health with NMN for cellular rejuvenation, Resveratrol for cardiovascular support, and Astaxanthin for antioxidant protection. The formula also includes HMB to support lean muscle mass and recovery, targeting longevity and daily vitality for small dogs (up to 24 lbs). It’s positioned as a proactive wellness option to integrate into routines for aging or high-energy dogs, focusing on long-term health through antioxidant-rich ingredients.
Buying Guide: Key Considerations For Choosing A Dog Antioxidant Supplement
When selecting an antioxidant supplement for a dog, consider the following factors to align with health goals and lifestyle:
- Ingredient quality and source: Look for real-food bases or well-studied antioxidants (e.g., berry blends, Omega-3s, CoQ10, NMN where appropriate). Avoid artificial fillers and allergens that may irritate sensitive dogs.
- Form and palatability: Treats, toppers, powders, and chews should match your dog’s preferences and mixing needs with ease of administration.
- Age and life stage: Young dogs may benefit from basic immune support, while seniors might require joint health, cognitive support, and cardiovascular care blends.
- Joint and muscle support: For active or aging dogs, ingredients like glucosamine, chondroitin, MSM, and HMB can complement antioxidant effects to maintain mobility.
- Digestive health: Probiotics and prebiotic fibers help ensure nutrient absorption of antioxidants and vitamins, supporting overall gut health.
- Allergy considerations: Check for common allergens (grain, soy, dairy) and choose hypoallergenic options if needed.
- Veterinary guidance: For dogs with chronic conditions or on medications, consult a veterinarian before starting any supplement regimen.
How To Integrate Antioxidants Into Daily Routines
Introduce supplements gradually, following the product’s feeding guidelines. Mix toppers or powders into meals at a consistent time each day to maximize compliance and absorption. Monitor your dog for any adverse reactions and adjust dosing as directed by the product label or a veterinarian. Consider pairing antioxidant supplements with a balanced diet rich in whole-food sources and omega-3 fatty acids for comprehensive wellness support.