Thanks for keeping my vitality going! 🐶😊
NAD+ PRECURSOR HEALTHY-AGING SYSTEM FOR SENIOR DOGS
Leap Years® Daily Healthy-Aging Support for Aging Dogs - NAD+ Precursor Soft Chews
More Life in Your Dog, More Dog in Your Life.
Daily cellular support for senior dogs experiencing age-related changes in cognitive health.
Two complementary formulas target NAD+ depletion and cellular senescence—two processes associated with aging.
- CLINICALLY STUDIED COGNITIVE SUPPORT
Shown to improve owner-assessed cognitive function in senior dogs after three months. - CELLULAR ENERGY SUPPORT
Formulated with an NAD+ precursor to support cellular energy production. - TARGETED HEALTHY-AGING SUPPORT
Targets NAD+ depletion and cellular senescence—two processes associated with aging.
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The formula
Two chews, one simple month
Every jar holds two golden starter chews plus a month of brown daily chews. Start the month with the golden ones, then give the brown ones every day after.
Given for the first two days of the monthly cycle. Formulated with an optimal concentration of senolytic and NAD+ precursor to aid in the body’s clearance of old cells and help maintain healthy cells.
Given daily for the remainder of the month. Formulated with a clinical-grade NAD+ precursor to continuously elevate cellular energy, supporting ongoing daily stamina and mental focus.
Vet formulatedClinically Studied30=Day GuaranteeMade in the USA
Why this one
The Leap Years difference
Most senior dog supplements borrow their evidence from human research. This one was tested in dogs, and we only say what the study supports.
Aging isn't one body part
A senior dog isn't a joint problem or a coat problem. Targeting a single part means chasing what you can see, one part at a time.
Every part runs on the same fuel
Cells convert food into ATP - the energy that everything else depends on. NAD+ is the molecule that makes that conversion possible.
That's the level we work at
Leap Years supplies an NAD+ precursor: the building block a cell uses to make its own. Not a fix applied to a symptom, a supply given to the system.
Which is why it's daily
A supply isn't a switch. It's one chew a day, and we ask for three months - the same window the clinical trial ran.
Cognition was the endpoint that reached statistical significance in the published trial. We don't claim outcomes the study didn't measure.
How it works over time
Cellular health is a regimen, not a quick fix
Leap Years works at the cellular level, so it isn't something you judge in week one. The clinical trial ran for three months before it measured a result — that's the window we ask for.
Month 1
Building the habit
- Most dogs take the chew as a treat
- Start with the golden chews on days 1–2
- Your job this month is simply not missing days
Month 2
Staying consistent
- Nothing to do differently
- Keep the daily routine going
- One jar covers a full month at your dog's dose
Month 3
The trial window
- This is the point at which the study measured its result
- If you're going to form a view, form it here
Grounded in science
Why cellular health, and why every day
NAD+ is a molecule every cell uses to turn food into ATP (usable energy). Levels of it are widely reported to fall as dogs get older, and that decline is one of the most studied ideas in the biology of aging.
A precursor is simply a building block the body uses to make its own NAD+. You aren't giving your dog NAD+; you're giving the raw material and letting the body do the work. That's why it's a daily chew rather than a one-off.
Simplified illustration. The chew supplies the building block; the cell does the rest.
Educational summary of published NAD+ research.
NAD+ levels decline as dogs age
— Illustrative - how NAD+ decline is described in the research
Natural decline with age
Illustrative only. Not measured in the Leap Years clinical trial, and not a claim about this product.
Finding your dog's size
A simple monthly routine based on weight.
The dose is set by weight. Give it in the morning, with or without food.
Days 1–2Golden starter chews
Days 3–31Brown daily chews
Small
11–22 lbs
31-count jar · 2 months
½ chew
per day
Medium
23–54 lbs
31-count jar · 1 month
1 chew
per day
Large
55–77 lbs
2 Jars · 1 month
2 chews
per day
X-Large
over 77 lbs
3 Jars · 1 month
3 chews
per day
Between two sizes? Go by current weight, not breed, and choose the smaller band if your dog sits on a boundary.
From the pack
Loved by dogs & their people
Customer Reviews
Overall rating: 5.0 / 5 from 15 reviews.
This supplement has turned my dog, Jet's, life around since fall of 2024 when it was looking like the beginning of the end for him with some unpleasant hind leg injuries. After a month and a half on leap years, he's recovered like it never happened and even been acting several years younger than he is.
This truly has changed my dog Cooper! It keeps his vitality going. Not to mention he loves them too 🐶
When I put my 7 year old dog Roxy on leap years she perked up after a week or so and started wanting to play again like when she was a puppy. Great product and happy to recommend it to dog parents that want to keep their dogs around as long as possible. Thank you.
Before Leap Years I was so worried we were in our final moments with Bella. She just seemed uncomfortable and lost. Since taking it we’ve noticed she is back to her former self, spunky and wild as always but she doesn’t pace and whine constantly like she was before. I am so excited to be able to enjoy her elder years with her.
I highly recommend the product as it added much quality of life to my senior dog's remaining years.
We having been using these supplements for over a year. We’ve seen our dogs stay happy and engaged while they continue to go through their middle years. Our dogs are 8 and 7 years old.
Really love Leap Years. Our pups love taking them and I love being able to ensure Smitty is as healthy as possible.
After only 2 months of adding Leap Years to my 10 year old lab who was having serious hip and leg issues he is noticeably improving. He plays ball like a puppy. Runs and plays again! I am so thankful
What can I say? I'm glad I decided to start Chevy on the supplements, mainly because I haven't seen any signs of aging or slowing down. He is a big boy and was never too playful. But recently, he has been jumping on our bed like it's a sport, and he's getting his toys to play with us before going to bed! I joke with him and tell him I'll start giving him a smaller dose because sometimes he behaves like a puppy, jumping and making noise so late!
Best News in Years. Leap Years have finally arrived to take on the challenge of a Senior dog. An Eskimo dog deserves his healthy aging. He might live comfortably to 12-16 years old. Thanks.
We see a fairly wonderful response from giving our 11 years old dog Leap Years for only 2 months! He has a new zip and is displaying much more playfulness. He has soft stairs to climb onto the couch and a second set for our bed. He was showing a lot of joint stiffness before leap years when climbing or descending. He now runs easy up and I have seen him bound off the couch, bypassing the stairs! I'm not encouraging that type of jumping down. He seems to be a little bit full of himself and he is very entertaining! Thank you Leap Years for your research that lead to this product. There are so many products available that you cannot see if they are really working. With Leap Years, we can see it is clearly working!
Awesome product, awesome customer service!
So far, it seems that Turtle has had some improvement in his movement with Leap Years supplements.
My puppy is 17 yrs old. Lovely nature and suffering with spinal spondylosis, heart mass of unknown nature and recently a broken act on his rt rear leg. Leap years has shown results after only 11 days now by improving his mental awareness and by changing his behavior as he used to be few years ago. I am so happy I have found this revolutionary daily supplement for him!