4 Traceable Ingredients. 3x More NR.
Dogs lose NAD+ as they age. LongTails delivers 200mg of NR per serving, 3x more than the leading alternative. Every ingredient is here for a reason. No fillers, no proprietary blends.
NR (Nicotinamide Riboside)
NAD+ PrecursorPeer-reviewed longevity compound that restores cellular NAD+ levels, supporting 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.
Backed by Research
Our ingredients are supported by peer-reviewed studies published in leading journals.
NAD+ and NR Research
-
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.
-
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!
MobilityGreat 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 DogHigh-quality supplement both of my dogs enjoy
My older dog's skin seems calmer and his coat looks healthier. My younger dog doesn't need much help yet, but I like knowing I'm supporting her health early on.
All AgesNoticeable Energy and Mobility Boost!
Since adding this powder to the food, he has become more alert, eager for walks, and even plays with a herding ball! The powder mixes easily with regular food and has a savory smell. A simple daily addition with big benefits.
EnergySeeing real changes in my 14-year-old
I have two pitties at very different life stages. My 14-year-old's skin seems calmer, his coat looks healthier, and he's moving more comfortably. It mixes easily, smells fine, and feels like a high-quality supplement I can feel good about giving them daily.
Senior DogA must-have daily addition
The blend of collagen, bone broth, and liver is clearly tasty because he took to it immediately, cleaning his bowl every time. It's packed with ingredients to support joints, heart, and cognitive function.
Daily Routine
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
|
Fixed dose
|
Fixed dose
|
| Purity |
Zero fillers needed
|
Binders required
|
Capsule shell
|
| Taste |
Mixes into any food
|
Some dogs refuse
|
Often spit out
|
| Picky Eaters |
Disappears in food
|
Detectable
|
Needs hiding
|
| Absorption |
Fast dissolve
|
Through binder matrix
|
Capsule first
|
Clean label. No compromises.
Why Us?
Not all supplements are created equal. Here's how we compare.
| Daily Serving (1 Scoop) | LongTails | Best Selling Alternative 1 | Best Selling Alternative 2 |
|---|---|---|---|
| Price |
$0.33
|
$1.67
|
$0.90
|
| Nicotinamide Riboside |
200 mg
|
60 mg
|
70 mg
|
| Collagen |
1500 mg
|
0 mg
|
0 mg
|
| Bone Broth |
|
|
|
| Real Beef |
|
|
|
| No fillers or binders |
|
|
|
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
|
1 Scoop | 30 days | 1 month |
Extra Large Breed
>76 lbs
|
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.
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