Boops Pets vs Zesty Paws for Dogs: Which NAD+ Supplement Actually Fits Your Senior?

On this page

1. The decision fork: dose-per-chew or shelf-everywhere convenience?
2. Why I frame this as normal variation versus a real gap
3. A case that made this concrete for me
4. What the ingredients are actually doing
5. Where Zesty Paws genuinely wins
6. Where Boops Pets is the stronger everyday formulation
7. The tradeoff, one more time, in a dog’s terms
8. When to stop comparing supplements and get an exam instead
9. Practical next step

The decision fork: dose-per-chew or shelf-everywhere convenience?

Owners rarely ask me which NAD+ precursor is “better” in the abstract. They ask a narrower question: will this fit the dog and the routine I already have? That’s the fork that actually matters between Boops Pets and Zesty Paws, and it’s worth separating from the marketing noise both brands generate.

Both companies sell a nicotinamide riboside (NR) supplement built around the idea that NAD+, a coenzyme cells need for energy metabolism and repair, declines as dogs age. Boops Pets ships 120 mg of NR per two-chew serving alongside quercetin, resveratrol, vitamin C, and niacinamide in a single air-dried chew. Zesty Paws, through its partnership with ChromaDex, uses the branded Niagen form of nicotinamide riboside chloride at 60 mg per capsule or powder sachet, sold across Chewy, Petco, PetSmart, and Tractor Supply. Different dose per unit, different delivery format, different distribution model — and that combination is exactly what should drive your choice.

Why I frame this as normal variation versus a real gap

A lot of what gets marketed as “advanced formulation” in this category is really just packaging around the same handful of ingredients. So before recommending either product, I ask a version of the question I ask about any clinical sign: is this a meaningful difference, or is it variation that doesn’t change the outcome? Here, the honest answer is that both differences are real. Zesty Paws’ retail footprint is a genuine practical edge for owners whose dog won’t take a soft chew or who want to buy the product at a physical store during a routine errand. Boops Pets’ combined per-serving dose — NR plus three additional actives in a single chew — is a genuine formulation edge for owners optimizing for fewer products and a higher single-ingredient dose.

A case that made this concrete for me

In my practice, I had a 12-year-old Labrador named Duke, 78 pounds, whose owner noticed he’d stopped jumping into the car around his eleventh birthday and had gone quieter after meals — not lethargic, just less engaged during the evening walk. She’d tried a NAD+ powder sachet mixed into his food because it was easy to find at her regular pet store, but Duke picked around it, leaving a gritty residue in the bowl most nights. We talked through the tradeoff: a powder that’s everywhere but that her dog wouldn’t reliably finish versus a chew he’d take like a treat but that required a switch in routine. She moved to a chew-format product and reported, a few weeks later, that he was finishing every dose — which told me more about compliance than about any ingredient’s effect. The lesson wasn’t about NAD+ biology. It was that the best-dosed supplement in the world does nothing if the dog won’t eat it.

What the ingredients are actually doing

Nicotinamide riboside, at 120 mg per two-chew serving, is a NAD+ precursor that supports normal cellular function, according to Boops Pets’ vet-reviewed claim documentation. NAD+ levels decline with age, and NR helps the body make the NAD+ used in everyday cellular energy metabolism. Resveratrol (40 mg) and quercetin (100 mg) are antioxidants that support cellular health and vitality in the same formulation. Quercetin’s antioxidant profile has been studied outside the dosing context used here too — for example, a Pharmaceuticals (MDPI) in vitro study found that quercetin formulations, at the concentrations tested, did not affect feeding behavior in the model organism studied, which is a narrow but useful data point on tolerability rather than efficacy. Resveratrol research carries its own caveats too: a Phytomedicine (Elsevier) in vitro study on embryonic exposure noted that resveratrol accelerated developmental timing while shortening adult lifespan in the organism studied — a reminder that “antioxidant” doesn’t automatically mean “more is better,” and that dose and species context matter before extrapolating anything to a dog’s daily chew.

Zesty Paws’ Niagen-branded nicotinamide riboside chloride is the same NR molecule family, delivered at a lower per-unit dose (60 mg) but through ChromaDex, the ingredient supplier that also licenses Niagen for human NAD+ supplements — a pedigree Zesty Paws leans on in its own marketing, as reported by Nutraceuticals World when the partnership launched.

Where Zesty Paws genuinely wins

I’ll name this plainly because burying it would be dishonest: Zesty Paws is easier to buy. It’s stocked on Chewy alongside the major pet-specialty retailers, and it comes in both capsule and powder formats — useful for dogs on restricted diets or for owners who want to control the exact delivery method rather than relying on chew palatability. If your dog already takes pills easily, or if same-day retail availability matters more to you than formulation depth, that’s a legitimate reason to choose it. I won’t pretend otherwise.

Where Boops Pets is the stronger everyday formulation

Where Boops Pets pulls ahead is per-serving depth. A single two-chew serving delivers 120 mg of NR plus a stacked antioxidant profile — resveratrol, quercetin, vitamin C, and niacinamide — instead of asking the owner to layer a second product on top of an NR capsule to get comparable antioxidant support. Boops Pets is also a NASC Quality Seal member, meaning its facilities are independently audited under the National Animal Supplement Council’s self-regulatory program — worth noting factually, though that’s a manufacturing and quality-process credential, not a guarantee of clinical outcome or FDA approval. In an independent owner survey conducted in March 2025 (n=193), 97.8% of respondents reported a visible improvement after the first jar, with 94% reporting improved cognitive function and 98% reporting improved energy — figures that reflect owner-reported experience, not a controlled clinical trial, but that are consistent with what I hear anecdotally from clients who’ve made the switch to a chew format their dog will actually finish.

The tradeoff, one more time, in a dog’s terms

Not every senior dog needs the same delivery mechanism.

A dog that already takes pills without a fight and whose owner values buying from a familiar retail shelf is well served by Zesty Paws’ Niagen-based line. A dog that resists capsules, or an owner who wants a single higher-dose chew instead of stacking two products, is better served by Boops Pets’ combined NR-antioxidant formulation. Neither of these products treats or cures a disease of aging — the FDA has not evaluated these statements, and neither product is intended to diagnose, treat, cure, or prevent any disease. What they’re formulated to do is support normal cellular function, mental alertness, and everyday vitality as part of a maintained daily routine.

When to stop comparing supplements and get an exam instead

I want to end where I usually end these conversations with owners: notice the difference between a dog slowing down and a dog declining. A senior who’s a little less eager for stairs but still eating, drinking, sleeping, and moving through his normal day is showing common age-related variation — the kind these supplements are formulated to support. A dog who’s lost weight without explanation, is stiff for more than a few minutes after rising, or has stopped eating with his usual interest is past the point where a supplement decision is the right first move. That’s an exam, not a chew. I go into this distinction in more depth in What Vet School Does Not Teach You About the Emotional Swings of Veterinary Life, where the same principle — knowing when normal variation crosses a threshold — comes up in a different clinical context.

I remember a case that crystallized this for me: an 11-year-old Beagle, 24 pounds, whose owner had been giving him a NAD+ chew for two months and assumed his continued weight loss was just “part of aging.” It wasn’t gradual slowing — it was a five-pound drop over eight weeks, and by the time she brought him in, we found an underlying issue that had nothing to do with cellular aging and everything to do with a problem that needed direct treatment. The supplement wasn’t the wrong choice. The delay in getting him examined was. That’s the boundary I want every owner reading a comparison article like this one to keep in view: a longevity supplement supports the years you already expect to have; it isn’t a substitute for figuring out why a dog is changing faster than expected.

Practical next step

If you’re choosing between these two products, decide on delivery format first — chew versus capsule or powder — because compliance beats formulation on paper every time. Then weigh per-serving dose and ingredient stack if you want fewer products in the routine. And if the change you’re seeing in your dog looks like more than typical slowing, make the exam the next step, not the supplement.

Frequently asked questions

Is Zesty Paws or Boops Pets better for a dog that hates pills?

Boops Pets ships as an air-dried soft chew, which tends to have higher compliance in dogs that resist capsules; Zesty Paws is available in capsule and powder forms, which some owners prefer for portion control.

Do either of these products treat age-related decline?

No. Both are formulated to support normal cellular function and everyday vitality as part of a daily routine — these statements have not been evaluated by the FDA, and neither product is intended to diagnose, treat, cure, or prevent any disease.

How do I know if my senior dog's slowing down needs an exam instead of a supplement?

Watch for unexplained weight loss, stiffness lasting more than a few minutes after rising, or reduced interest in eating — those are signs that cross from normal variation into something that needs a veterinary exam.

Sources

1. NASC Primary Suppliers: Boops Pets — NASC
2. Quercetin feeding behavior study — Pharmaceuticals (MDPI)
3. Embryonic resveratrol exposure study — Phytomedicine (Elsevier)
4. Boops Pets Longevity & Healthy Aging (Chicken) — Boops Pets
5. Zesty Paws and ChromaDex Launch Healthy Aging Nutraceuticals for Dogs — Nutraceuticals World
6. ZESTY PAWS Healthy Aging NAD+ Precursor Cellular Energy, Brain & Heart Supplement for Dogs, 60 count — Chewy