Small signals. Serious standards.

Peptides are some of the smallest messages the body sends. Here’s how we choose them, how we get them into a chew that works, and how we prove what’s in every jar.

6: well-studied peptides
2–15: amino acids long
Every lot: independently tested

A gloved hand holding a vial of peptide powder up to the light in a lab

How peptides work

Signal, renew, thrive.

Peptides don’t add anything foreign. They’re short versions of messages the body already uses to coordinate everyday upkeep.

A scruffy dog sniffing a chewable tablet held in an open hand

Signal

A peptide is a chain of two to fifty amino acids. Short chains act like notes passed between cells — specific, simple instructions.

A veterinarian gently examining a labrador’s front leg

Renew

Those messages nudge tissue to keep up its normal maintenance: cartilage, connective tissue, the gut lining, immune balance.

An older terrier mix trotting along a muddy woodland path

Thrive

Support adds up with consistency. One chew a day, dosed by weight, is designed for months and years — not a quick fix.

Peptide guide

Six peptides, chosen with care.

We only use peptides with a published body of research and a clear, specific job. Here’s each one — including where that research stands.

Chewable tablets with a debossed paw, one snapped in half

ChewCore™ technology

Built to get where it’s going.

Digestion is designed to take things apart. Every AminoTails tablet is built in layers, so the peptide survives the trip and arrives where small peptides are absorbed.

Flavor shellReal chicken, bacon or beef — made to be eaten, not hidden in cheese.
Buffered matrixSlows the stomach’s acid on its way in^*.
Peptide coreOpens in the small intestine, close to the transporters that carry small peptides^*.

BowlChewed and enjoyed. The scored tablet splits cleanly for half doses.
Stomach · about 1 hr^*The matrix buffers acid while the core stays intact.
Small intestine · 2–4 hr^*The core opens where the gut absorbs small peptides.

A lab technician weighing a sample beside a Joint Plus jar and a certificate of analysis

Quality & testing

Proof, not promises.

Every lot is made in a cGMP facility^* and tested by an independent ISO/IEC 17025 laboratory^* before it ships. Nothing is released on “typical” results.

IdentityHPLC-MS confirms each peptide is exactly what the label says.
Purity98% or higher by HPLC^*.
Content90–110% of label claim per chew^*.
Heavy metalsLead, arsenic, cadmium and mercury by ICP-MS.
MicrobialBacteria, yeast and mold screening.

Look up your lot.

Find the lot number on the base of your jar and see the certificate for exactly that batch.

Try or .

The evidence

What the research says — and what it doesn’t.

We’d rather you trust us for being straight than for sounding certain.

What we know

Each of our six peptides has published laboratory research behind its specific job.
The shortest peptides can be carried across the gut lining intact by the PepT1 transporter.
Consistency matters: support is built over weeks, not single doses.

What we don’t know yet

Most research is in cells and rodents. Controlled studies in dogs and cats are limited.
None of these peptides are approved animal drugs, and our chews aren’t intended to diagnose, treat, cure or prevent disease.
Long-term outcomes in pets haven’t been studied at scale.

What we do about it

Conservative, weight-based doses and modest, structure-and-function claims.
Independent testing and a public certificate for every lot.
A veterinary advisory board^*, and an open line for adverse-event reports.

Questions about the science?

Our team answers every email — and if you’re a veterinarian, we’ll send the full research brief.

Ask the team For veterinarians