The evidence standard
A clear label, with clear limits.
See the active doses first. Open the details when you want the research, source, or evidence boundary.
The full label What is in every scoop?
Each full scoop contains 200 mg nicotinamide riboside chloride and 1,500 mg hydrolyzed bovine collagen, Types I and III. Beef bone broth powder and beef liver powder complete the formula.
Source: LongTails Product Facts panelHuman research What does the NR evidence show?
Human trials found that 100-300 mg per day of NR raises blood NAD+. A full LongTails scoop provides 200 mg, within that studied human range.
Conze et al., Scientific Reports, 2019Our standard Why we only claim what is proven
The human research is on the NAD+ biomarker in people, not a canine outcome trial. So we point you to the dose and the blood-NAD+ data and let them stand on their own, rather than dress them up as a promise we cannot back yet. Holding that line is what premium should mean.
The biomarker finding and the product promise stay separateClean-label standard Why a dry powder?
The formula is made in a US cGMP facility. The dry powder uses no fillers, binders, added sugars, or artificial flavors.
Source: manufacturer and formulation recordsFrom Verified Dog Parents
Pulled from verified Amazon reviews. Every dog is different.
Easy to add to the daily routine
My dog loves it too. It's so easy to implement into his daily food routine.
Daily routineNo convincing needed
I have the 3 pickiest dog eaters ever. They needed no convincing with this.
Picky eaters
Verified Purchase
A routine for both of my dogs
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.
Skin and coatVerified reviews from longtails.com
Collected by Okendo from customers who bought here. Good or bad, they are all shown.
- KSKRISTA S. C.Verified BuyerRated 5 out of 5 stars1 year agoNot sure who loves it more!
I have the 3 pickiest dog eaters ever and I usually have to get more clever than I want to when trying to get any of them to take a supplement. They needed no convincing with this, they loved it and got so excited when they heard me open the container! I got 1 container and was mostly giving it to my 5 yr old Rhodesian Ridgeback but then also started my Dutch Shepherd on it because he injured his knee playing. We started on a second container and that's when I noticed the changes. I am a skeptic through and through I'm science driven and don't believe anything until I'm convinced with evidence and supporting real life examples and let me tell you.. I'm convinced my Rhodesian doesn't nap as much wants to play ball like he did when he was a puppy and just seems to be over all waggier and smileier! It's wild, we are out of the supplement for now and the benefits seem to remain even though I haven't given it to him in over 2 weeks! The injury my Dutch Shepherd sustained was to a knee ligament and I was told that 6 weeks or more with zero activity would be a quick recovery. Anyone with a Dutch shep knows that there is no such thing as zero activity and both he and I were about to go crazy while limiting, as best I could, playing ball. I would say at best .. we mostly limited vigorous activity for a few weeks but still were active and then slowly added back some fetch and longer walks. With the addition of NAD+ i am quite confident we are where we are now because of it! I can…
- TFTatians F.Verified BuyerRated 5 out of 5 stars1 year agoCan’t get enough!
We began using this product about 2 months ago. Everyday she looks forward to her dinner bowl full of longtails goodness! Truthfully, she would eat the entire jar in one sitting if I let her. 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. Thank god for long tails, she needs the energy to keep up with the various little people seeking her attention on the daily. I am so grateful to have found this product.
- RGRemi G.Verified BuyerRated 5 out of 5 stars12 seconds agoLong tails NAD
Works great for my 16 year old chihuahua big difference in pep also works for my 5 year old Maltese . Highly recommend
- MFMargaret F.Verified BuyerRated 4 out of 5 stars2 months agoNad
She seems more active
- MEMariann E.Verified BuyerRated 5 out of 5 stars1 year agoMy dogs loved this
It’s normally hard to get my dogs to take a supplement, but they loved LongTails. Thank you so much for making this great supplement.
The LongTails Daily Routine
A clean powder mixed into the food your dog already eats.
Scoop
One scoop a day, sized to your dog's weight. Scoop included.
Mix
Stir it into wet food, raw, or damp kibble. Picky dog? Start small and work up to the full scoop.
Support
Keep it in the daily routine. Proactive support is not a quick fix.
90-Day Money-Back Guarantee
Try the LongTails routine for up to 90 days. If it is not a fit, contact us for a full refund.
No return required.
Frequently Asked Questions
What should I expect?
LongTails is proactive daily support, not a quick fix. Keep it in the routine and give it time. Every dog is different, and individual experiences vary.
Will my dog actually eat it?
Mix the powder into wet food, raw food, or moistened kibble. For a picky dog, begin with a smaller amount and build to the label serving. Avoid serving the powder in plain water on its own.
Is it safe for my dog?
LongTails is made in the USA in a certified facility, with no fillers, binders, or added sugars. Follow the label serving. If your dog takes medication or has a health condition, check with your vet first.
What age should my dog start?
Follow the label. If you're not sure it fits your dog, ask your vet.
Can I use this with other medications?
LongTails is a daily food supplement. If your dog takes medication or has a health condition, check with your vet first.
How is this different from regular joint supplements?
LongTails is a dry powder with two active doses printed on the label: 200 mg NR for cellular energy and 1,500 mg collagen for skin and coat. Beef bone broth and beef liver complete the whole-food matrix. No fillers, binders, or added sugars.
Does NAD+ help with cognitive decline or dog dementia?
Honestly, no, and we will not claim it does. The human trials that tested NR for memory and thinking came back null, even at five to ten times the amount in a LongTails scoop, and no published canine study shows an NAD+ precursor improving cognition. What NR does have is strong human evidence for one thing: raising blood NAD+, the coenzyme behind cellular energy and DNA repair. That is the claim we stand on. We would rather tell you where the evidence stops than sell a promise it cannot keep.
What if it doesn't work for my dog?
Contact us within 90 days of purchase for a full refund. No return is required.
How do I cancel or change my subscription?
Manage future shipments from your account. You can skip, change frequency, or cancel without calling support.
How fast will I receive my order?
Amazon handles our shipping, so most orders arrive in 2 days. Subscriptions ship on your schedule, always with free shipping.
Why We Created LongTails
We started LongTails with a simple question: why choose between real science and ingredients you can recognize? So we made a powder with both. Two active doses printed on the label, and nothing hidden.
- Ozzy & The LongTails Team, by Longer Life, Inc.
LongTails daily routine
$35.96