Peptide Glossary

The fundamental building blocks of peptides and proteins. Adequate dietary amino acids (from quality protein) are essential for tissue repair and healing.

The proportion of a substance that actually reaches circulation and can have an effect. Many peptides have low oral bioavailability because digestion breaks them down, which is why injection is often used.

A synthetic peptide derived from a protein found in gastric juice. Studied primarily in rodents for effects on tendon, muscle, and gut tissue healing. Widely discussed for pet recovery, though companion-animal evidence remains limited.

A document from a manufacturer or lab verifying a product's identity, purity, and composition. A COA is a key sign of legitimate sourcing for any peptide intended for a pet.

A licensed pharmacy that prepares customized medications for a specific patient on a prescription. For pets, compounding pharmacies are the main legitimate channel for many peptide preparations, with documented purity and dosing.

A specific situation or condition in which a therapy should not be used because it could cause harm. Identifying contraindications for a specific pet is a core reason to involve a veterinarian.

Calculating a dose according to an animal's body weight, typically in micrograms or milligrams per kilogram. Because species and size affect metabolism, human dosing cannot be safely scaled to pets by guesswork.

Using a medication in a way not specifically approved by regulators — for example, in a species or condition it wasn't formally tested for. Much veterinary medicine is off-label, but it should be veterinarian-directed.

A degenerative joint disease common in older pets, causing pain and reduced mobility. It's a frequent target for recovery and wellness interventions, including research into peptide-based support.

A short chain of amino acids linked together — the same building blocks that form proteins, but in smaller strings. The body naturally produces many peptides that act as hormones and signaling molecules.

The path by which a therapy is given — such as subcutaneous injection, oral, or topical. The route dramatically affects how much of a peptide reaches its target and how it should be dosed.

An injection given into the layer of tissue just under the skin. A common route for peptide administration in pets because it bypasses digestion, allowing the peptide to reach circulation intact.

A synthetic fragment of thymosin beta-4, a naturally occurring peptide involved in cell migration and tissue repair. Marketed for recovery in performance animals, with mechanistic rationale but thin controlled evidence in pets.

A naturally occurring peptide found in many tissues, involved in cell migration, blood vessel formation, and wound repair. TB-500 is a synthetic fragment based on part of this molecule.

The biological process of repairing damaged tissue after injury or surgery. Several researched peptides are studied for their potential to support aspects of this process, always alongside proper nutrition and care.