Science-Backed Daily Nutrition
One Scoop. Four Systems Supported.
Dogs lose NAD+ as they age, and with it, cellular energy, repair, and resilience. LongTails restores what time takes away: NAD+ precursor for cellular repair, collagen for joints, bone broth for gut health, and beef liver for bioavailable nutrients. 3x more NR than the leading alternative.
Cellular Energy
NR restores NAD+ levels for mitochondrial function
Joint Support
Collagen peptides for mobility and comfort
Cognitive Function
NAD+ supports brain health and alertness
Coat & Skin Health
Beef liver and bone broth for visible vitality
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.
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 Ages
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 Us?
Not all supplements are created equal.
| 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 |
|
|
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| No fillers or binders |
|
|
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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.
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.
Can I pause or cancel my subscription?
Yes, anytime. No penalties. We want you subscribed because it's working, not because it's hard to leave.
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.
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.