Dogs rely on consistent nutrition and preventive care to stay healthy from puppyhood through their senior years. As pet owners increasingly view dogs as family members, the focus has shifted toward proactive wellness rather than reacting to health problems after they appear. Supplements and functional treats are now a major part of that approach.
Industry data highlights just how significant this shift has become. The U.S. dog treats, chews, and toppers market reached $7.9 billion in 2025 and is projected to grow to $15.9 billion by 2035, according to industry market research. Health-focused products, including supplements for digestion, dental care, mobility, and immune support, are driving much of that growth.
But not every supplement is formulated the same way. Ingredients, formulation quality, veterinary backing, and functional benefits all play major roles in determining whether a product truly contributes to long-term canine health. Below, we outline what to look for when choosing supplements and highlight several well-known brands currently shaping the category.
Why Functional Supplements Are Becoming Essential for Dogs
The rise of functional dog supplements reflects a broader trend in pet care, which involves treating animals with the same preventive health mindset applied to humans.
According to industry data, dental chews account for roughly 23% of growth in dog treats, largely because pet owners recognize the importance of oral health in preventing systemic issues. Dental problems, plaque buildup, and gum disease can influence a dog’s overall well-being.
Digestive health has also become a major focus. Many veterinarians refer to the gut microbiome as a dog’s “second brain” because it influences immune response, metabolism, and even mood. Supplements that support gut bacteria through probiotics and digestive enzymes are increasingly common.
Behavioral enrichment is another factor. Veterinary guidance notes that chew treats can provide stress relief and stimulation while also delivering health benefits. However, experts caution that not all chews are appropriate, and reputable brands with well-tested formulas are typically the safest choice.
With these criteria in mind, the following brands are among the most recognizable in the functional dog supplement and treat market today.
Our Top Picks for Dog Supplements and Functional Chews
1. Pup Labs
The supplement lineup from puplabs.com focuses on addressing the underlying causes of common canine health issues through science-based formulations and veterinary guidance.
Unlike many treat-style supplements that prioritize flavor or texture, Pup Labs emphasizes targeted wellness solutions. Their products address specific concerns such as digestive health, joint support, ear health, oral hygiene, and immune function.
Key Features:
- Science-driven formulas focused on root-cause health solutions
- Veterinary-reviewed products and educational content
- Targeted supplements for digestion, joints, dental health, and immunity
- Direct-to-consumer model emphasizing ingredient purity
Best For:
Pet owners who want targeted, science-backed supplements designed to address specific health issues rather than general treats.
Standout Quality:
The brand’s emphasis on addressing the root causes of canine health problems, particularly gut health and systemic wellness, distinguishes it from many supplement brands that focus primarily on surface-level symptoms.
2. Greenies
Greenies is one of the most recognizable brands in the dental chew category and is widely recommended by veterinarians for maintaining oral hygiene.
Their toothbrush-shaped chews are designed to clean along the gumline and reduce plaque buildup as dogs chew. The brand’s dental treats carry recognition from the Veterinary Oral Health Council for plaque and tartar control.
Key Features:
- Textured chew design that helps clean teeth
- Veterinary Oral Health Council recognition for dental benefits
- Multiple sizes tailored for different dog weights
- Variety of flavors and grain-free options
Best For:
Dog owners looking for a daily dental chew that supports oral hygiene through chewing activity.
3. Milk-Bone
Milk-Bone has been a staple in the dog treat market for decades, known for crunchy biscuits and a wide range of chew products.
Many of its treats are fortified with vitamins and minerals that contribute to overall canine health. While traditionally viewed as a reward treat, some Milk-Bone products also support dental care.
Key Features:
- Classic crunchy biscuits and chew varieties
- Fortified with vitamins and minerals
- Broad availability in grocery and pet stores
- Variety of flavors and pack sizes
Best For:
Owners who are looking for widely available treats that combine reward-style snacks with basic nutritional fortification.
4. Zuke’s
Zuke’s focuses on natural ingredients and training-friendly treats that are low in calories but high in protein. Their Mini Naturals treats contain real meat as the first ingredient and are often used by trainers due to their small size and strong flavor appeal.
Key Features:
- Real meat ingredients with high protein content
- Small treat size suitable for training sessions
- Grain-free formulas without corn or soy
- Natural antioxidant ingredients such as turmeric and berries
Best For:
Active dogs and training scenarios where frequent rewards are needed.
5. Blue Buffalo
Blue Buffalo is widely recognized for its natural dog foods and has expanded into supplements and functional treats designed to support overall wellness. The brand’s treats often feature real meat ingredients and antioxidant blends that mirror the company’s broader focus on natural nutrition.
Key Features:
- Real meat as a primary ingredient
- Antioxidant blends aimed at immune support
- Grain-free treat options available
- Multiple treat types including jerky and crunchy bars
Best For:
Pet owners seeking natural ingredient treats from a widely recognized premium pet nutrition brand.
What to Look for in a Quality Dog Supplement
Choosing the right supplement begins with understanding what contributes to overall canine health. While treats and chews are often marketed for flavor and enjoyment, functional supplements serve a deeper purpose, helping address nutrition gaps and supporting specific systems in the body.
Several factors matter when evaluating a supplement. First, ingredient transparency is essential. High-quality supplements typically rely on recognizable ingredients and clearly list active compounds such as probiotics, omega-3 fatty acids, glucosamine, or herbal extracts.
Veterinary input also plays a critical role. Formulas that involve veterinary researchers or clinical review often have stronger credibility and adhere to higher safety standards.
Functional targeting is another important consideration. Dogs may require different support depending on age and health status. Puppies benefit from immune and digestive support, adult dogs may require dental or gut health maintenance, and senior dogs often need joint or mobility supplements.
Scientific studies reinforce the importance of targeted nutritional support. A randomized placebo-controlled clinical trial published in PLoS ONE by Martello et al. (2022) found that a supplement containing Boswellia serrata, glucosamine, and other compounds significantly reduced clinical signs of osteoarthritis in dogs over a 60-day period. Another study published in Frontiers in Veterinary Science by Ragetly et al. (2025) showed improved mobility and reduced pain scores in dogs given a joint supplement containing eggshell membrane and omega-3 ingredients.
These findings illustrate why many veterinarians recommend supplements designed for specific physiological needs rather than general treats alone.
Conclusion
The growing interest in functional dog supplements reflects a shift toward preventive pet care. Rather than waiting for health problems to develop, many pet owners now look for ways to support their dog’s digestion, mobility, immune function, and dental health throughout every life stage.
Understanding ingredient quality, veterinary involvement, and targeted health benefits can help pet owners navigate the expanding supplement market more effectively. With continued innovation in canine nutrition and increasing awareness of preventative wellness, supplements are likely to remain a key part of responsible pet care in the years ahead.
References
- Creevy, K. E., et al. (2025). Dog Aging Project TRIAD trial: Rapamycin intervention testing lifespan and healthspan extension in companion dogs. AVMA News / GeroScience.
- Martello, E., Bigliati, M., Adami, R., et al. (2022). Efficacy of a dietary supplement in dogs with osteoarthritis: A randomized placebo-controlled, double-blind clinical trial. PLoS ONE, 17(2), e0263971.
- Orthomed Joint Supplement Trial. (2026). Veterinary Teaching Hospital clinical trial. Colorado State University College of Veterinary Medicine and Biomedical Sciences.
- Ragetly, G. R., Martins, Â., Ober, C. A., et al. (2025). Efficacy of a joint supplement containing eggshell membrane among other ingredients to improve the mobility of dogs with osteoarthritis: A multicenter double-blind randomized placebo-controlled study. Frontiers in Veterinary Science, 12, 1561793.
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