Best Dog Antioxidant Supplements Under $50 (2026)
We ranked products under $50 by ingredient relevance to antioxidant support, targeted health benefits, formulation quality, and overall value score
The Verdict
- Best Overall: Grass Green Max Strength Dog Chews with Probiotics — Best for digestion and urinary support: probiotic chews that pair antioxidants with digestion-focused ingredients
- Best Value: Grass Green Dog Chews for Lawn Health — Best for lawn-health and urine control: probiotic chew formula intended to support urinary balance and skin/gland health
Top Picks
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1
Best Overall Grass Green Max Strength Dog Chews with Probiotics
Best for digestion and urinary support: probiotic chews that pair antioxidants with digestion-focused ingredients
Grass Green Max Strength chews support urinary balance, digestion, and immune health in dogs, with a duck flavor. Customers note effective reduction of yellow lawn spots and improved urinary tract comfort
- 12 natural ingredients
- Supports urinary balance and digestion
- Vet-recommended grass protection concept
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2
Best Value Grass Green Dog Chews for Lawn Health
Best for lawn-health and urine control: probiotic chew formula intended to support urinary balance and skin/gland health
Dog urine neutralizer chews supporting gut and urinary health for a greener yard. Contains probiotics and enzymes; dogs may enjoy the taste. Customer note: chews help reduce yellow spots and improve grass health
- grass-focused urine neutralizer
- probiotics and natural ingredients
- dog-friendly taste
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3
Heart Support Granules for Dogs - Vet-Formulated CardioMAX
Best for heart support: granules with omega-3s and taurine formulated to support canine cardiovascular health
Vet-formulated heart health supplement for dogs, featuring L-Taurine, L-Carnitine, CoQ10 and omega-3s to support cardiovascular function. One customer notes improved immune support in a 6-year-old lab
- L-Taurine and L-Carnitine core nutrients
- Antioxidant blend including CoQ10
- Omega-3 fatty acids support heart health
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4
NaturVet Mushroom Max Advanced Immune Support Dog Supplement
Best for immune support: mushroom-blend supplement that focuses on polysaccharides to support immune response
Dog immune support supplement with maitake, shiitake and reishi mushrooms. Helps support normal inflammatory response and overall health. Customer insight notes mixed taste and texture but positive immune support feedback
- mushroom-based immune support
- vet-formulated antioxidant blend
- includes multiple mushroom types
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5
Azovast Plus Kidney Health Paste for Dogs & Cats
Best for kidney-focused care: paste formulated to support renal health alongside probiotic ingredients
Oral probiotic paste to support kidney function in dogs and cats. Chicken flavor; no refrigeration needed. Customers note potential kidney benefits and that it helps with UTIs, though opinions vary on value and size
- probiotic paste for kidney support
- no refrigeration required
- chicken-flavored formula
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6
Quercetin for Dogs – Allergy relief (2 Pack)
Best for allergy relief: quercetin formula aimed at reducing histamine-related symptoms and supporting immunity
Quercetin for Dogs in liquid form for allergy support and immune help. customers note it eases itching and paw licking and is easy to administer
- all-natural formula
- easy-to-administer liquid
- tackles allergies and immune support
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7
Cardio support for dogs with antioxidants and vitamins
Best for cardiac antioxidant balance: cardio support with L-carnitine and L-taurine to support heart metabolism
Cardio support supplement for dogs with L-carnitine, L-taurine, CoQ10 and vitamin E to aid cardiovascular health. Customers note improved energy and heart health, with some concerns about taste
- L-carnitine and L-taurine combination
- CoQ10 and vitamin E for heart health
- cardiovascular and circulatory support