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LongTails NAD+ Precursor + Collagen for Dogs

4.4/5 from 73 Amazon reviews90-day money-back guarantee

Two active doses, fully disclosed, in a dry daily powder with beef bone broth and beef liver. Up to 60 days per jar.

200 mg NRPer scoop
1,500 mg collagenPer scoop
30 scoopsUp to 60 days
Two active doses disclosed200 mg NR and 1,500 mg collagen
No filler ingredientsNo fillers, binders, or added sugars
Made in the USAcGMP facility

Supplement Facts

Serving Size: 1 scoop (4g)
Servings per Container: 30

Active Ingredients Per Serving:

  • Hydrolyzed Collagen (Bovine, Type I & III) ............ 1,500 mg
  • Nicotinamide Riboside Chloride (NR) ............ 200 mg

Inactive Ingredients: Beef Bone Broth Powder, Beef Liver Powder.

No fillers. No binders. No artificial flavors. No synthetic colorants.

How to Use

Daily dosing by dog size:

  • Small breed (<26 lbs): 0.5 scoop per day
  • Large breed (27-75 lbs): 1 scoop per day
  • Extra large breed (>76 lbs): 1.5 scoops per day

How to serve: Mix into wet food, raw food, or moistened kibble. For a picky dog, begin with a smaller amount and build to the label serving.

Use the label serving consistently. LongTails is proactive daily support, not a quick fix, and individual experiences vary.

View full details

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.

200 mgNR per scoop
1,500 mgCollagen per scoop
US cGMPMade in the USA
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 panel
Human 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, 2019
Our 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 separate
Clean-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 records

From 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 routine
Steve L. Verified Purchase

No convincing needed

I have the 3 pickiest dog eaters ever. They needed no convincing with this.

Picky eaters
Krista S.Krista S. 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 coat
Dania P. Verified Purchase

The LongTails Daily Routine

A clean powder mixed into the food your dog already eats.

1

Scoop

One scoop a day, sized to your dog's weight. Scoop included.

2

Mix

Stir it into wet food, raw, or damp kibble. Picky dog? Start small and work up to the full scoop.

3

Support

Keep it in the daily routine. Proactive support is not a quick fix.

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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.

Founder

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 NAD+ Precursor Senior Dog Supplement Powder - 200mg NR + 1,500mg Collagen - 30 Scoops, 60 Days

LongTails daily routine

$35.96 Small dog · 1 jar · 60 days