LongTails NAD+ and Pawprint Lab take opposite approaches to the same goal. Pawprint is a flavored liquid you drop onto food, marketed around a "nanoliposomal" absorption story; it is easy to give a small or fussy dog. LongTails is an unflavored powder you mix in, built around dose transparency: it prints both actives in milligrams (200 mg Nicotinamide Riboside and 1,500 mg hydrolyzed collagen per scoop) with no proprietary blend, and uses no added sugar. As a format note, the active in a powder is not sitting in water over the life of the bottle, which matters because NAD+ and its precursors degrade in water over time. If you want a disclosed, no-added-sugar, lower-priced powder, LongTails is the pick; if you specifically need a liquid dropper for a tiny or food-refusing dog, Pawprint's format is the reason to choose it.
Side by side
| LongTails NAD+ | Pawprint Lab | |
|---|---|---|
| Format | Unflavored powder, mix into food | Flavored liquid drops (2 fl oz dropper) |
| NAD+ precursor | 200 mg NR (Nicotinamide Riboside) | NMN + NAD+ + CoQ10 + resveratrol |
| Collagen | 1,500 mg hydrolyzed collagen | Not included |
| Added sugar / sweetener? | No added sugar | Contains rice syrup; about 2 g sugar per serving |
| Made in USA | Yes, cGMP | Stated |
| Published canine trial? | No (and we say so) | No |
| Price (approx, as of June 2026) | $39.95 one-time / $35.95 Subscribe & Save | $69.00 one-time (brand site) |
Prices change. Both figures are approximate as of June 2026, verify current pricing on each product's page before buying.
Where Pawprint Lab is the better pick
If your dog is very small or refuses powder mixed in food, a liquid dropper is genuinely easier to dose, and a dog who will take a flavored liquid but not a powder is better served by the liquid. That ease of dosing is the real reason to choose a liquid format. We would rather you give your dog something they will actually take than nothing at all.
Where LongTails is the better pick
- You can see the dose. LongTails prints 200 mg of NR and 1,500 mg of collagen on the label, with no proprietary blend, so you know exactly how much of each active your dog gets per scoop.
- The format protects the active. NAD+ and its precursors degrade in water over time, faster when warm, so a ready-to-drink liquid can lose potency the longer it sits opened; a powder keeps the active dry until each scoop. This is a general property of the chemistry, not a measurement of any one bottle.
- Honest about absorption. A swallowed, water-soluble supplement passes through the liver first, so claims that a dropper "bypasses the liver" oversell what an ordinary oral product can do. LongTails makes no such claim.
- No added sugar. Pawprint's drops are flavored with rice syrup and carry about 2 g of sugar per serving. LongTails has no added sugar, just NR, collagen, beef bone broth, and beef liver.
- Price and retention. LongTails is meaningfully lower per bottle and offers Subscribe & Save at $35.95.
Want the format question in more depth? Read our full liquid vs powder NAD+ guide.
Frequently asked questions
Pawprint Lab vs LongTails, which is better for a senior dog?
For dose transparency, format stability, and price, LongTails NAD+ leads: it prints 200 mg of NR plus 1,500 mg of collagen per scoop, comes as a powder so the active is not degrading in water, has no added sugar, and costs less per bottle. For a very small or food-refusing dog, Pawprint's liquid dropper is easier to give. Neither has a published canine trial.
Does Pawprint Lab contain sugar?
Yes. Pawprint Lab's drops are a flavored liquid whose other ingredients include rice syrup, with about 2 g of sugar per serving. LongTails NAD+ is an unflavored powder with no added sugar.
What's a good alternative to Pawprint Lab for dog NAD+?
If you want a disclosed-dose, made-in-USA option in a stable powder format with no added sugar, LongTails NAD+ (200 mg NR + 1,500 mg collagen per scoop, $39.95) is a direct alternative. It trades Pawprint's liquid-dropper convenience for full dose transparency, no sugar, and a lower price.
Is liquid or powder better for a dog NAD+ supplement?
A powder keeps the active out of water, which matters because NAD+ and its precursors degrade in aqueous solution over time. A liquid is easier to dose for a tiny or fussy dog. See our full liquid vs powder guide for the trade-offs.
