Is LongTails Right for Your Dog?
We built this for a specific kind of dog parent. Here's who thrives on the routine — and who doesn't.
This is for you if…
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Your dog is 7 or older and you've noticed them slowing down on stairs, walks, or play
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You have an adult dog (3+) and you're thinking ahead — you'd rather support their cells before decline, not after
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You read labels before buying. Proprietary blends, mystery doses, and filler ingredients are a dealbreaker
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You already invest in your own health and you want the same standard for your dog
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You've tried a joint chew or two and felt like you were treating a symptom, not the cause
This isn't for you if…
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You want a visible change in 48 hours. NAD+ support compounds over weeks and months, not days
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You're shopping on price alone. We're not the cheapest option, and we don't pretend to be
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You want a single-ingredient supplement. LongTails is a complete daily stack — NR, collagen, bone broth, and liver — not a joint-only or gut-only product
If you nodded through the first list, you're exactly who this was built for.
4 Traceable Ingredients. One Clean Stack.
Dogs lose NAD+ as they age. LongTails delivers 200mg of NR per serving — the same clinical dose used in the leading studies — plus collagen, bone broth, and beef liver. Every ingredient is here for a reason. No fillers, no proprietary blends.
NR (Nicotinamide Riboside)
NAD+ PrecursorPeer-reviewed NAD+ precursor. The 200mg in each LongTails serving matches the dose used in the clinical studies that showed sustained NAD+ elevation in mammals — not a watered-down fraction of it. Supports cellular energy production and DNA repair.
Hydrolyzed Collagen
Type I & III PeptidesSupports joint structure, connective tissue, and skin elasticity. Bioavailable peptide form for optimal absorption.
Bone Broth Powder
Grass-Fed SourceRich in glycine, proline, and bioavailable minerals. Supports gut lining integrity and natural palatability.
Beef Liver
Freeze-Dried, Human GradeNature's multivitamin. Rich in bioavailable B vitamins, copper, iron, and retinol, nutrients that support every organ system.
No fillers. No binders. No artificial flavors. No synthetic colorants. No soy, wheat, corn, or dairy.
The LongTails Daily Routine
Longevity science in one scoop a day. No pills, no chews, no hassle.
Scoop
One serving per day, precision-dosed by your dog's weight. Scoop included.
Mix
Stir into wet food, raw, or kibble. Dogs love the beef bone broth and liver flavor.
Support
NAD+ support compounds over time. Consistency is key.
Guided by Experts
Our formula is developed with input from veterinarians and scientists committed to evidence-based pet nutrition.
Casey Bradley PhD
PhD, Animal Science
Animal NutritionLongTails NAD+ Precursor Collagen Dog Supplement has ingredients backed by research to help senior dogs.
Dr. Kelly Hood
DVM, Board Certified
Veterinary MedicineI recommend LongTails NAD+ Precursor Collagen to parents who want to ensure their dogs live their best lives.
Dr. Wendy Asato
DVM
Veterinary MedicineLongTails contains the essential components I look for in a senior dog supplement to support aging gracefully.
Hear It From a LongTails Parent
Real dog parent. Real results. No script.
“It took about 2 weeks to notice a difference, but once it bio-accumulated, his energy levels returned to his under-9 range. It's like it took 3 years off his age. He's running and jumping and I have to tell him to take it easy because he forgets he's an old dog.”Verified Customer
Backed by Research
Our ingredients are supported by peer-reviewed studies published in leading journals.
NAD+ and NR Research
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Nicotinamide riboside is uniquely and orally bioavailable in mice and humans
Nature Communications, 2016
Key finding: NR supplementation effectively raised NAD+ levels in human blood cells, confirming oral bioavailability.
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NAD+ metabolism and its roles in cellular processes during ageing
Nature Reviews Molecular Cell Biology, 2021
Key finding: NAD+ decline is associated with aging. Precursors like NR may help support NAD+ levels associated with healthy cellular function.
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Chronic NR supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults
Nature Communications, 2018
Key finding: NR was safe and well-tolerated, with significant and sustained NAD+ elevation over 6 weeks.
These studies reflect research on individual ingredients, not the LongTails product specifically.
What LongTails Parents Are Seeing
Real results from real dog parents. No miracles, just more good days.
Irresistible & easy to hide in their wet food
I started giving this to my dogs and in a very short period I saw the difference in their mobility. They have become more alert, eager for walks, and even play with a herding ball!
Mobility
Verified Purchase
Great support for my senior dog!
After a few weeks, I noticed better energy levels and more alert behavior. My dog seems more engaged during walks and less stiff getting up.
Senior Dog
Verified Purchase
Not sure who loves it more!
I have the 3 pickiest dog eaters ever. They needed no convincing with this. My Rhodesian doesn't nap as much, wants to play ball like when he was a puppy, and just seems overall waggier and smilier!
Energy
Verified Purchase
Can't get enough!
I've noticed her go from lounging around the house to a spry and alert pup. Her mood seems to have changed and she is now roughing and tumbling with her adopted bro, as they did when he was a pup.
Senior Dog
Verified Purchase
My senior dog is thriving
I absolutely love this product. My dog loves it too. It's so easy to implement into his daily food routine. He's 11 and he's thriving thanks to this supplement.
Senior DogMost Parents Choose the 90-Day Supply
NAD+ works cellularly, and it compounds. Most dogs show visible changes at month 2–3, which means a 30-day supply trains the wrong habit. Start with 90 days — first shipment 50% off, every one after at 10% off. Cancel anytime.
Real Dogs. Real Results.
These parents committed to the routine. Here's what they saw.
"After 2 months on LongTails, he's back to greeting us at the door and asking for walks again. The stiffness in his back legs has noticeably improved."
"I started both my dogs on this, my senior and my 4-year-old. The senior's mobility is better, and I love knowing I'm supporting my younger dog's cells before any decline even starts."
"His energy is increasing every day. He's more alert, eager for walks, and even plays with a herding ball now. A simple daily addition with big benefits."
What to Expect with LongTails
Results build over time. Here's what LongTails parents typically report.
Week 1-2
Settling In
Dogs take to the taste immediately. The powder blends into any food.
Week 3-4
Early Signs
More eagerness for walks, increased alertness, subtle energy shifts.
Month 2-3
Visible Changes
Improved mobility, more playfulness, better coat condition.
Month 3+
Compounding Benefits
Cellular support compounds over time with consistent daily use.
Every dog is different. Younger dogs may show subtler or no changes; the supplement works at a cellular level.
Why Powder?
Precision, purity, and compliance. No fillers required.
| Feature | Powder (LongTails) | Chews | Pills |
|---|---|---|---|
| Dosing |
Adjust by weight
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Fixed dose
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Fixed dose
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| Potency preservation |
Cold-processed, stable
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Heat degrades NR¹
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Dry fill, stable
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| Purity |
Zero fillers needed
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Binders required
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Capsule shell
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| Taste |
Mixes into any food
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Some dogs refuse
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Often spit out
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| Picky Eaters |
Disappears in food
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Detectable
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Needs hiding
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| Absorption |
Fast dissolve
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Through binder matrix
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Capsule first
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Clean label. No compromises.
¹ Nicotinamide riboside degrades with pseudo-first-order kinetics; degradation rate doubles for every 10°C temperature increase, producing nicotinamide — a different compound than the active NAD+ precursor. Traditional soft-chew hot extrusion runs at 90–130°C. Source: Wong et al., Food & Nutrition Research, 2020.
Why Us?
Same clinical dose of NR. Four more ingredients. A fraction of the price.
| Daily Serving (1 Scoop) | LongTails | Boops Pets | Leap Year |
|---|---|---|---|
| Lowest price per day |
$0.30
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$0.91
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$1.65
|
| Nicotinamide Riboside |
200 mg
|
200 mg
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200 mg
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| Collagen |
1500 mg
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0 mg
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0 mg
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| Bone Broth |
|
|
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| Real Beef |
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|
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| No fillers or binders |
|
|
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Lowest available per-day prices as of April 2026, including current promotions and Subscribe & Save discounts. Doses pulled from each brand's published label.
Recommended Dosage Guide
| Dog Weight | Daily Serving | Ideal Subscription | Deliver Every |
|---|---|---|---|
Small Breed
<26 lbs
|
0.5 Scoop | 60 days | 2 months |
Large Breed
27–75 lbs
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1 Scoop | 30 days | month |
Extra Large Breed
>76 lbs
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1.5 Scoops | 20 days | 3 weeks |
Each jar contains 30 full scoops. For optimal health benefits, we recommend following this feeding guide.
Frequently Asked Questions
How long until I see results?
Most parents notice subtle changes within 2-4 weeks. Visible mobility and coat improvements typically appear around month 2-3.
Will my dog actually eat it?
Yes. The bone broth and beef liver give it a savory flavor dogs love. Most parents report their dogs eat it without hesitation.
Is it safe for my dog?
LongTails is made with human-grade ingredients in an NASC-certified, FDA-registered, cGMP facility in the USA. No fillers, binders, or artificial additives. Consult your vet if your dog has a specific medical condition.
What age should my dog start?
LongTails benefits dogs of all ages. Senior dogs (7+) often show the most visible improvements in mobility and energy. Adult dogs benefit from proactive cellular support, and the earlier you start, the more you're investing in long-term health. We recommend starting from age 3+.
Can I use this with other medications?
LongTails is a food-based supplement with no known drug interactions. However, if your dog is on prescription medication, we recommend checking with your vet before starting any new supplement.
How is this different from regular joint supplements?
Most joint supplements only address one symptom. LongTails combines NAD+ precursor (NR) for cellular energy and repair, collagen for joint support, bone broth for gut health, and beef liver for bioavailable nutrients. It's a complete longevity stack, not a single-purpose product.
What if it doesn't work for my dog?
Every dog is different, and we know that. If you give LongTails a fair try — at least 90 days — and you or your dog aren't happy with it, email us for a full refund. No return required, no questions asked. You keep the jar.
How do I cancel or change my subscription?
Manage everything from your account — skip a shipment, change frequency, swap sizes, or cancel entirely. No phone call, no email, no retention gauntlet. One click and you're done.
Can I give my dog both LongTails products?
Yes. NAD+ Precursor Collagen and LIFE+ target different pathways — cellular energy and joint health (NAD+, collagen) vs. antioxidant defense and digestive health (study-matched antioxidants, probiotic). The active ingredients don't overlap. Both share a beef liver and bone broth base for flavor, and the combined intake is well within safe limits. Follow the dosing guide for each product based on your dog's weight.
If your dog is on blood-thinning medication or is a breed predisposed to copper storage disease (Bedlington Terrier, Labrador, Doberman, West Highland White), consult your vet first.
How fast will I receive my order?
LongTails orders are fulfilled by Amazon for fast, reliable delivery. Most orders arrive within 2 business days. Subscriptions ship automatically on your schedule with free shipping on every order.
90-Day Money-Back Guarantee
Try LongTails for 90 days. If your dog isn't happy with it, we'll refund you in full. No questions asked.
Your only risk is not trying.
Why We Created LongTails
We started LongTails because we watched our own dogs slow down and refused to accept it. Every ingredient in this formula is here for a reason. No fillers, no marketing fluff. Just science-backed nutrition designed to give every dog more good days.
- Ozzy & The LongTails Team, by Longer Life, Inc.
NAD+ Precursor Collagen Dog Supplement
$39.95