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Independent·Affiliate-disclosed·Spec-verified·Updated August 7, 2026
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Head-to-head buyer guide

La Petite Labs Hollywood Elixir Longevity System vs Renue by Science PET NMN Longevity Chews for Cats

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

By Ryan · Founder
Updated Aug 6, 2026
Quick verdict

La Petite Labs Hollywood Elixir Longevity System (premium, $89–$379) vs Renue by Science PET NMN Longevity Chews for Cats (entry, $34.95) - 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
Renue by Science PET NMN Longevity Chews for Cats, 60-count soft chew jar
Renue by Science

PET NMN Longevity Chews for Cats

Almost nobody formulates an NAD precursor chew for cats, which is what makes this one worth a look at $34.95 for 60 chews. It is a real cat formula rather than the dog chew relabelled: two actives instead of nine, and 35 mg of NMN against the dog chew's 77 mg. What it is not is a bargain per milligram.

PRICE
$34.95
View at Renue by Science
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 Renue by Science PET NMN Longevity Chews for Cats if

Cat owners who want an NAD precursor actually formulated for a cat, with a short two-ingredient label, and who accept that the price per milligram is ordinary rather than a bargain.

Skip if

Your cat refuses soft chews, your cat reacts to fish, or you want veterinary-grade evidence for NMN in cats, which we could not find from any brand.

Go deeper

FULL REVIEW
Read the La Petite Labs Hollywood Elixir Longevity System review →
FULL REVIEW
Read the Renue by Science PET NMN Longevity Chews for Cats review →

Frequently asked

Which is better, the La Petite Labs Hollywood Elixir Longevity System or the Renue by Science PET NMN Longevity Chews for Cats?

They are closely matched on our scoring, so the right pick comes down to your priorities. The verdict and spec table above compare them on price, features, and who each one suits.

How much do they cost?

La Petite Labs Hollywood Elixir Longevity System: $89 to $379. Renue by Science PET NMN Longevity Chews for Cats: $34.95. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

La Petite Labs Hollywood Elixir Longevity System: 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. Renue by Science PET NMN Longevity Chews for Cats: Cat owners who want an NAD precursor actually formulated for a cat, with a short two-ingredient label, and who accept that the price per milligram is ordinary rather than a bargain.

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