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Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew

Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew

$45.00
$60.00 $45.00
25% Sold out

The only daily chew that rebuilds your dog's cellular engine — energy, joints, brain and repair — in one chicken-flavored dose.

Refills NAD+, the cellular fuel of youth

Fights aging at the cellular root

More energy, mobility & sharpness

Real chicken soft chew dogs love

Vet formulated

We make Puppy Harbor Vitality NAD+ in small batches to ensure maximum potency and freshness. Next batch ships:

June 30th
(1,500 units) SOLD OUT
July 7th
July 14th
Now Formulating
No Subscription Try For 60 Days Secure Checkout

60-Day Money-Back Guarantee

We offer a full 60-day money-back guarantee.

Try Puppy Harbor Vitality daily for 60 days. If you don’t feel a meaningful difference in how your dog moves, plays and acts, email us and we’ll refund your order.

No complicated process. No stress. Just a simple, risk-free way to see whether it’s a fit for you.

What Is NAD+?

NAD+ is a molecule inside every one of your dog's cells. It powers the energy his body runs on and the repair crews that fix daily wear and tear.

Here is the catch: NAD+ falls steadily as dogs age. Less fuel, less repair, and on the outside that looks like the slowing, stiffening and graying you have been watching.

Vitality gives his body the raw materials it uses to make NAD+ again, in a chicken chew he thinks is a treat.

What it supports

  • More energy and a return of his spark
  • Easier movement and joint comfort
  • A sharper, more present mind
  • Whole-body antioxidant defense
  • One simple daily chew, no pills to hide
  • Real chicken flavor dogs actually want
  • NAD+ plus longevity, joint and brain support in one
  • Backed by a 60-day money-back guarantee

How It Works

Most longevity products focus on just one piece of the picture. Vitality was designed to support your dog from multiple angles at once.

Nicotinamide Riboside (NR) — the most-studied NAD+ precursor, to refill cellular fuel.

Resveratrol — helps switch on the sirtuins, the so-called longevity genes.

Quercetin — a senolytic that helps clear worn-out 'zombie' cells.

Alpha-GPC and SAMe — support focus, mood and a sharper mind.

Glucosamine and Chondroitin — support aging joints and easier movement.

CoQ10, Vitamin C and Vitamin E — round it out with antioxidant defense.

Give the daily dose for your dog's weight. Simple, and easy to stay consistent with.

How Do I Know It's Actually Working?

Most owners notice their dog's first changes within the first few weeks: a little more energy, more interest in walks, getting up off the floor more easily.

With daily use, those changes tend to build and steady out over the following weeks.

The key is consistency. Give his cells a little time, then pay attention to how he moves and acts day to day.

And if it is not the right fit, you are covered by our 60-day money-back guarantee.

Shipping & Returns

Tracked shipping on all orders.

Orders typically dispatch within 24–48 business hours.

$4.50 flat-rate shipping, and most orders arrive within a 7-12 business days.

Every order ships from our facility with full tracking.

If you need help with your order, our support team is easy to reach and happy to help.

  • A must for older dogs!

    Owners usually come to me once their dog has already slowed down. I tell them consistent daily support beats reacting late, and this makes that easy to keep up. ★★★★★

    Dr. Sarah Goodwine, DVM
View full details

Every Ingredient Carefully Chosen

Seven actives that work in phases to support healthy aging at the cellular level. Tap any ingredient to see the research.

Nicotinamide Riboside

Cellular energy

Quercetin

Cellular renewal

Glucosamine

Joint support

Betaine

Methylation support

Resveratrol

Longevity support

Vitamin C

Antioxidant

Vitamin B3

DNA repair

Nicotinamide Riboside

NAD+ is the molecule that powers your dog's cells, and it drops as they get older. NR is one of the most researched ways to help restore it, supporting cellular energy, DNA repair pathways and the 'longevity gene' (sirtuin) pathways the rest of the formula relies on.

BACKED BY RESEARCH

In human trials, NR raised whole-blood NAD+ by up to 142% within two weeks, sustained over eight weeks.

Learn more

Quercetin

As cells age, some stop working but refuse to die, lingering as 'zombie' cells that drive inflammation. Quercetin is a senolytic compound studied for helping the body clear that burden so healthy cells have room to work.

BACKED BY RESEARCH

The first human study to directly show that senolytics reduce senescent-cell burden.

Learn more

Glucosamine

Glucosamine is a precursor your dog's body uses to maintain cartilage and joint cushioning. It is the most familiar joint ingredient in veterinary nutrition, included here to support mobility as dogs slow down.

BACKED BY RESEARCH

In dogs with osteoarthritis, glucosamine combined with chondroitin improved pain and weight-bearing scores.

Betaine

Processing NAD+ precursors uses up the body's methyl groups. Betaine helps restore that pool, supporting healthy methylation and complementing the NR and niacinamide in the formula.

BACKED BY RESEARCH

Betaine supplementation significantly lowered plasma homocysteine in a controlled human trial.

Resveratrol

Sirtuins are enzymes tied to healthy aging, and they need to be switched on as well as fueled. Resveratrol activates them while NR and niacinamide supply the NAD+ they consume, so the two sides of the formula work together.

BACKED BY RESEARCH

In kennel dogs, dietary resveratrol raised BDNF and antioxidant capacity, supported immune markers and helped normalize the stress axis.

Learn more

Vitamin C

Vitamin C helps neutralize the oxidative stress that builds up with age and acts as a cofactor for collagen, supporting connective tissue and everyday immune defense.

BACKED BY RESEARCH

A potent antioxidant and enzyme cofactor supporting collagen synthesis and immune cell function.

Learn more

Vitamin B3

Niacinamide feeds the NAD+ salvage pathway, giving the formula a second route to support cellular energy and the NAD+-dependent DNA repair that keeps aging cells working.

BACKED BY RESEARCH

In a Phase 3 human trial, nicotinamide supported DNA repair through NAD+-dependent cellular energy.

Learn more

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Puppy Harbor Vitality NAD+

If your dog has slowed down more than he used to, you're not imagining it. The slower mornings, the lag on walks, the gray creeping in, the way he just seems less himself, these are all signs his cells need better support. Vitality was built to refuel his cellular energy, joints and mind in one simple daily chew.

Slowing Down

Stiff Joints

Cloudy Eyes

Less Playful

Sleeping More

Graying Early

Our customers tell it better than we do!

Excellent

4.8

/ 5

based on 20,000+ happy dog owners

Like a puppy again 🐶

My 11 year old golden used to take forever to get up in the morning. Three weeks on these chews and he's trotting to the door for his walk again. He thinks they're treats, so there's no fight at all. My 11 year old golden used to take forever to get up in the morning. Three weeks on these chews... My 11 year old golden used to take forever to get up in the morning. Three weeks on these chews and he's trotting to the door for his walk again. He thinks they're treats, so there's no fight at all.

Sarah M.

Wish I'd found this sooner

Our lab is 9 and had really slowed down. She's steadier on the stairs now and wants to play in the evenings again. Easy to give too, she eats it right out of my hand. Our lab is 9 and had really slowed down. She's steadier on the stairs now and wants to play in... Our lab is 9 and had really slowed down. She's steadier on the stairs now and wants to play in the evenings again. Easy to give too, she eats it right out of my hand.

Diane K.

The stiffness eased up

My senior shepherd was stiff after every nap. A couple of months in and he gets up so much easier. His coat looks shinier too, which I wasn't even expecting. My senior shepherd was stiff after every nap. A couple of months in and he gets up so much easier.... My senior shepherd was stiff after every nap. A couple of months in and he gets up so much easier. His coat looks shinier too, which I wasn't even expecting.

Marcus T.

He's more himself again

I just wanted my old guy to feel good in his later years. He seems brighter and more alert, and he greets me at the door again. That alone is worth it to me. I just wanted my old guy to feel good in his later years. He seems brighter and more alert, and... I just wanted my old guy to feel good in his later years. He seems brighter and more alert, and he greets me at the door again. That alone is worth it to me.

Linda R.

Even my picky girl loves them 🐾

My beagle turns her nose up at most supplements but not these. It took about a month to really notice, but she has more pep on walks and isn't napping the whole afternoon. My beagle turns her nose up at most supplements but not these. It took about a month to really notice,... My beagle turns her nose up at most supplements but not these. It took about a month to really notice, but she has more pep on walks and isn't napping the whole afternoon.

Emily C.

Both our seniors are on it now

We have two older dogs and started them together. More energy, easier movement, and they line up the second they hear the bag. So glad we tried it for our girls. We have two older dogs and started them together. More energy, easier movement, and they line up the second they... We have two older dogs and started them together. More energy, easier movement, and they line up the second they hear the bag. So glad we tried it for our girls.

Robert and Anne P.

Stop Telling Yourself "He's Just Getting Old"

You've tried the premium food. The extra rest. Maybe a joint chew. Some helped a little. None gave you your dog back, because none of them touched the real problem: the cellular fuel his body stops making with age. Vitality works upstream, at the source.

More energy, more often

Less lying around. More tail wags and more interest in the things he used to love.

Easier movement

Smoother mornings and easier stairs, with joints supported by glucosamine and chondroitin.

A sharper, more present dog

Alpha-GPC and SAMe support focus and mood, so he is more himself again.

One chew. Once a day. Done.

No pills to hide, no mess. A real chicken chew he thinks is a treat.

More Good Years Start With a Better Formula

When you support his cells from multiple angles at once, the change is bigger than any single pill. More energy. Easier movement. A brighter, sharper dog.

That is why we built Vitality as a full system, not a one-note NAD+ booster with a longevity claim on the label.

It is a simple daily chew designed to give you what you actually want: more good years with him.

0%

Noticed more energy

within the first few weeks of daily use
0%

Moving more easily

owners reported easier stairs, walks and mornings
0%

Seemed more themselves

brighter, more engaged and more playful
0%

Would recommend

to a friend with an aging dog

Finally, A Real Way
To Fight His Aging.

A multi-pathway daily chew with nicotinamide riboside, resveratrol, quercetin, Alpha-GPC, glucosamine and more. The full system to refill his cellular fuel and bring back the dog you remember.

60-day money back guarantee
  Them

Refills NAD+, the cellular fuel of youth

Energy, joints AND brain in one chew

Vet-formulated

Real chicken chew dogs love

60-day money-back

GMP & FDA-registered facility

Have Questions? We Have Answers.

What makes this different from other dog longevity supplements?

Most pour in one NAD+ booster and call it a day. Vitality stacks nicotinamide riboside (the most-studied NAD+ precursor) with resveratrol, quercetin, Alpha-GPC, SAMe, glucosamine, chondroitin, CoQ10 and more, covering cellular energy, longevity genes, joints and the brain in one chew. It is a full system, not a single-ingredient shortcut.

Can this really turn back my dog's clock?

NAD+ is the molecule your dog's cells use to make energy and repair themselves, and it plummets with age. Refill it and you are refueling the cellular engine behind his slow-down. In a published study of 70 senior dogs, an NAD+ precursor and senolytic combination improved owner-rated signs of aging. It will not make a 12-year-old a literal puppy overnight, but it targets the actual biology of aging, not just the symptoms.

How long until I notice something?

Most owners notice a shift between weeks 3 and 4: a little more spark, more interest in walks, getting up more easily. Deeper change builds over 6 to 8 weeks of daily use. We are not promising overnight miracles, because those do not exist and you have probably already wasted money on products that claimed otherwise. We are asking for a few weeks, and backing it with a 60-day refund.

How many chews a day?

Dosing is by weight: smaller dogs get fewer, larger dogs up to about 4 a day. Each jar is a one-month supply at your dog's dose. You can give it with or without food, whenever fits your routine.

Is it safe with his other medications?

Vitality is vet-formulated and made in a GMP, FDA-registered facility. Quercetin and resveratrol can interact with some medications, so if your dog is on a prescription or has a health condition, check with your vet before starting.

Are there any side effects?

Most dogs do great. A few may have a brief, mild tummy adjustment in the first days as things settle. Introduce it gradually, give it with food if he has a sensitive stomach, and you are covered by the 60-day guarantee either way.

What dog parents are saying

4.8

Join 20,000+ dog parents who stopped settling for slow, stiff, and tired

  • M
    Maya R.
    US flag
    May 2026
    Verified buyer
    Finally moving like himself
    My boy's been slowing down for two years and I just accepted it. Three weeks on Vitality and he's trotting ahead on walks again, even did a lap of the yard. I didn't think a chew could do this.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 12 0
  • J
    Jasmine T.
    US flag
    Apr 2026
    Verified buyer
    I actually cried
    Ordered this fully expecting to return it. A month later my senior girl is playing with her toys again. I cried a little. If your dog has slowed down the way mine had, you'll get it.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 18 0
  • D
    Danielle M.
    US flag
    May 2026
    Verified buyer
    My other dog keeps stealing his
    Noticed a real difference in the first couple weeks, more energy, easier on the stairs. Now I give it to both my dogs. They think it's a treat, which is half the reason I never forget.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 15 0
  • P
    Priya K.
    US flag
    Feb 2026
    Verified buyer
    Didn't expect his eyes to brighten too
    Bought these for his stiffness. Around week three he just seemed more there, more switched on, following me around the house like he used to. The fog lifted along with the limp.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 9 0
  • R
    Rachel S.
    US flag
    Apr 2026
    Verified buyer
    I've tried everything. This one stuck.
    Joint chews, fish oil, fresh food, you name it, eight months of it. This is the first thing that actually changed how he moves and acts. And he eats it like candy, not like a supplement.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 21 0
  • S
    Sarah K.
    US flag
    Mar 2026
    Verified buyer
    He can do the stairs again
    He'd lost his fire this past year and stairs had become a real struggle. Five weeks on Vitality and he's taking them again without the hesitation. A friend noticed before I even mentioned it. Giving it every day now.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 14 0
  • T
    Tanya B.
    US flag
    May 2026
    Verified buyer
    My vet asked what I changed
    He's been off this past year. At his last checkup my vet noticed he seemed brighter and stronger and asked what I'd been doing. I told her, one chew a day. She asked me to send her the link.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 14 0
  • A
    Alicia W.
    US flag
    Feb 2026
    Verified buyer
    Ordered it half expecting to return it
    I'm pretty cynical about supplements. The slow, tired senior I'd resigned myself to is just not how he is now. What surprised me was realizing how much I'd been quietly grieving him until he came back.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 7 0
  • K
    Keisha M.
    US flag
    Apr 2026
    Verified buyer
    His coat looks better too
    Started these for his energy, which improved fast. Then around week three his coat was noticeably shinier and softer. Nobody ever told me those two things were connected.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 11 0
  • L
    Lauren C.
    CA flag
    May 2026
    Verified buyer
    Wish I hadn't waited two years
    Kept meaning to do something about him getting older and kept putting it off. Finally tried these. The difference in his energy and movement is not subtle. Should've started in 2023.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 10 0
  • J
    James F.
    US flag
    Apr 2026
    Verified buyer
    Does what it says
    One chew in the morning, dog moves better and seems more playful. Tastes good so he never refuses it. Fast shipping too. Simple.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 6 0
  • S
    Steph O.
    US flag
    May 2026
    Verified buyer
    Took longer than I expected
    Didn't notice much the first week so nearly gave up. By week three something had clearly shifted, he's livelier. Keeping it, but be patient.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 3 0
  • M
    Mark D.
    US flag
    Feb 2026
    Verified buyer
    Shipping was slow but support was quick
    Took longer to arrive than expected. Emailed them and got a same-day reply with tracking. The chews are good though, my old guy's moving better and he loves the taste.
    Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew     Was this helpful? 3 0

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Puppy Harbor Vitality NAD⁺ - Dog Longevity Chew

$45.00
$60.00 $45.00