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Independent·Affiliate-disclosed·Spec-verified·Updated June 27, 2026
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Head-to-head buyer guide

La Petite Labs Hollywood Elixir Longevity System vs Zesty Paws Healthy Aging NAD+ Precursor

Specs, prices, editor verdict, and who should buy which - compared side-by-side.

By Ryan · Founder
Published May 3, 2026
Quick verdict

La Petite Labs Hollywood Elixir Longevity System (premium, $89–$379) vs Zesty Paws Healthy Aging NAD+ Precursor (mid, $59.97) - different tools for different jobs (see the per-product details below).

Compared on 0 shared specs · same category (pets).

La Petite Labs Hollywood Elixir Longevity System pet supplement sachet box
La Petite Labs

Hollywood Elixir Longevity System

Most pet supplements are a scoop of glucosamine and a marketing promise. Hollywood Elixir is the rare one that reads like a longevity stack built for a dog or cat: NAD+ precursor, glutathione, CoQ10, and a stack of polyphenols in a single daily sachet.

PRICE
$89–$379
View at La Petite Labs
Zesty Paws Healthy Aging NAD+ Precursor capsules box for dogs
Zesty Paws

Healthy Aging NAD+ Precursor

This is the rare pet supplement that borrows directly from the human longevity playbook. The active ingredient is Niagen, the branded nicotinamide riboside found in supplements people take for cellular aging, now dosed for dogs.

PRICE
$59.97
View at Zesty Paws
The verdict

These are close picks. Both score in the same range. The right call depends on buyer profile - read the per-buyer recommendations below.

Who should buy which

Pick the La Petite Labs Hollywood Elixir Longevity System if

Owners of a healthy adult or senior dog or cat who already buy clean, third-party-tested supplements and want a single daily NAD+ and antioxidant routine instead of assembling one ingredient at a time.

Skip if

You want proven, vet-prescribed treatment for a specific condition, you are price-sensitive, or you need a product that is in stock today.

Pick the Zesty Paws Healthy Aging NAD+ Precursor if

Owners of senior or aging dogs who already believe in NAD+ support for themselves and want the most direct, single-active way to extend that thesis to their dog.

Skip if

You want proven, vet-backed outcomes today, or you would rather spend on a broad senior multivitamin that covers joints, gut, and heart in one chew.

Go deeper

FULL REVIEW
Read the La Petite Labs Hollywood Elixir Longevity System review →
FULL REVIEW
Read the Zesty Paws Healthy Aging NAD+ Precursor review →