NAD⁺ for Pets: Why This Tiny Molecule Matters for Your Pet
When we think about supporting our pets’ health, we often focus on the things we can see: their energy, mobility, appetite, coat, and behavior. But many of the processes that influence those things begin much deeper, at the cellular level. That’s where NAD comes in. Nicotinamide Adenine Dinucleotide, commonly known as NAD or NAD⁺, is a naturally occurring coenzyme found in virtually every cell of the body. Dogs, cats, humans, and other animals all rely on NAD for fundamental cellular processes, particularly those involving energy production and metabolism. Researchers are also increasingly interested in NAD because of its connection to mitochondrial function, cellular maintenance, and aging.
What Does NAD Do in an Animal’s Body?
Think of NAD as one of the tools cells need to turn nutrients into usable energy. When an animal eats food, the body breaks carbohydrates, fats, and proteins down into smaller components. Inside the cells, those nutrients ultimately help produce ATP, the primary form of energy used by the body. NAD participates in the chemical reactions that make that energy production possible. This matters because virtually everything your pet does requires cellular energy, from running and playing to maintaining muscle, digestion, brain activity, immune function, and everyday tissue maintenance.
1. Supports Cellular Energy Production
One of NAD’s most important roles is helping the mitochondria produce energy. Mitochondria are sometimes described as the powerhouses of the cell because they help turn nutrients into ATP. Adequate NAD availability is necessary for many of these energy-producing reactions. That means NAD is connected to something every pet relies on every day: healthy cellular energy metabolism. Researchers studying NAD-related compounds in animals have observed effects on mitochondrial and metabolic pathways, although the degree of benefit varies depending on the animal model and intervention being studied.
2. Plays a Role in Healthy Aging
NAD has received considerable scientific attention because NAD metabolism can change as animals age. Aging is associated with changes in mitochondrial function, metabolism, inflammation, cellular repair, and the body's ability to respond to stress. NAD is involved in several of these biological pathways. Scientists are therefore studying whether maintaining or restoring NAD-related pathways could help support healthspan, the amount of life an animal spends healthy and functioning well, rather than simply lifespan. This research is particularly interesting for senior pets.
3. Supports Normal Cellular Maintenance
Cells experience stress and damage throughout life. NAD is used by several enzymes involved in normal cellular maintenance and responses to cellular stress. For example, NAD is involved in pathways associated with enzymes called sirtuins and PARPs, which participate in cellular regulation and DNA-related repair processes. That doesn't mean NAD “repairs everything” or prevents disease. Instead, it is one of the naturally occurring molecules the body relies upon to keep normal cellular processes functioning.
4. May Be Important for Brain and Cognitive Health
The brain requires a tremendous amount of energy, making healthy mitochondrial function especially important for neurological health. Researchers have started investigating NAD-related strategies in aging dogs. One randomized controlled study involving 70 senior dogs with mild-to-moderate cognitive impairment tested a combination containing an NAD precursor and a senolytic compound. Dogs receiving the full-dose combination showed improvement in owner-assessed cognitive scores after three months, although researchers did not see significant differences in their separate in-house cognitive testing or measured physical activity. That distinction is important: the research is promising, but it does not yet prove that NAD supplementation alone improves cognition in dogs. It does, however, provide an interesting reason for scientists to continue studying NAD-related pathways in canine aging.
5. May Play a Role in Metabolic Health
Because NAD participates directly in the reactions cells use to process carbohydrates and fats, researchers are also interested in its relationship with metabolic health. In animal studies, increasing NAD availability or using NAD precursors has been associated with changes in areas such as:
mitochondrial function
glucose and fat metabolism
inflammatory pathways
cellular stress responses
physical function
Most of this evidence comes from laboratory animal research, especially rodent studies, rather than large veterinary trials in household dogs and cats. That means these findings are scientifically interesting, but they should not be interpreted as proven benefits for every pet.
6. NAD and Senior Pets
Aging isn't caused by one single biological change. Researchers now look at aging as a collection of interconnected processes, including mitochondrial dysfunction, chronic low-grade inflammation, cellular senescence, and changes in cellular metabolism. Because NAD touches several of those pathways, scientists are especially interested in whether supporting NAD metabolism could someday become part of strategies designed to help animals maintain: energy, cognitive function, metabolic health, cellular resilience, and overall quality of life as they age. Veterinary research in this area is still developing, particularly in cats, so there is much more to learn. A recent review of nutrition in aging dogs and cats emphasized that research into the nutritional needs and biomarkers of healthy aging in companion animals is still relatively limited.
NAD vs. NAD Precursors: What's the Difference?
You'll often hear NAD, NMN, nicotinamide riboside (NR), and nicotinamide discussed together. They aren't exactly the same thing. NAD⁺ is the coenzyme cells ultimately use. NAD precursors are compounds the body can use as building blocks to produce NAD. A large amount of NAD research involves these precursors rather than directly administering NAD itself. That's why it's important to look closely at exactly which ingredient was used when evaluating a study.
What Does the Research Actually Tell Us?
NAD biology is well established: animals need NAD for normal cellular metabolism and energy production. What scientists are still determining is whether giving additional NAD or NAD precursors to otherwise healthy pets translates into meaningful improvements in longevity, energy, cognition, or disease prevention. A 2026 systematic review evaluating NAD-related interventions found that animal studies frequently demonstrated improvements in metabolic, mitochondrial, inflammatory, and functional measures. However, results varied considerably depending on the model and treatment used. For dogs specifically, clinical research is still relatively small, and feline-specific evidence is even more limited. So while NAD is an exciting area of animal wellness research, it is important to separate NAD's established biological role from benefits of supplementation that are still being investigated.
The Bill & Coo Takeaway 🐾
NAD may be tiny, but its role inside the body is anything but small. From helping cells produce energy to participating in metabolic and cellular maintenance pathways, NAD is part of the basic biology that keeps animals functioning every day. Research into NAD and NAD precursors is also opening new conversations around healthy aging, mitochondrial health, cognition, and longevity in companion animals. As science continues to evolve, so will our understanding of how ingredients like NAD may fit into the bigger picture of pet wellness. At Bill & Coo, that's exactly why we created Ingredient Files, to go beyond the ingredient label and explore the science behind what we're putting into products for the animals we love. Thoughtfully chosen. Backed by science. Made for pets. Come back next Monday for the next episode of Ingredient Files and another deep dive into the ingredients behind pet wellness.
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