# Old Dog Longevity

> Old Dog Longevity makes The Dog Peptide Pen — a dual-chamber injector pen for aging dogs. BPC-157 and TB-500 stay separate until you twist; weight-set clicks, once daily. $119 per pen. Sold direct; not an FDA-approved drug.

## Entity
- Brand: Old Dog Longevity
- Product: The Dog Peptide Pen
- Also known as: dog peptide pen, BPC-157 + TB-500 pen for dogs, BPC-157 pen, TB-500 pen
- Category: canine longevity and recovery; dual-chamber peptide pen
- Website: https://olddoglongevity.com/
- Contact: hello@olddoglongevity.com
- Founded: 2026
- Tagline: Longevity, one click at a time.

## What we sell
The Dog Peptide Pen: one dual-chamber pen, 60 clicks, 0.05 mL per click. Twist to mix BPC-157 and TB-500; weight-set clicks, once daily. One pen is a 28-day use window; discard 28 days after mixing, even if clicks remain. Each click contains approximately 167 mcg BPC-157 and 167 mcg TB-500 (10 mg + 10 mg per 3.0 mL).

## What we do not claim
- Not an FDA-approved drug for dogs.
- Not a cure for arthritis, a torn ligament, or any disease.
- Not a substitute for veterinary diagnosis, pain control, or surgery.
- Not for puppies, pregnant or nursing dogs, or dogs with active cancer without a vet.
- No controlled canine trials have been completed for BPC-157 or TB-500.

## Pricing
- 1 pen: $119 (60 clicks; 28-day use window)
- 3 pens: $299 (84-day protocol, save $58)
- 6 pens: $558 (save $156)
- 90-day guarantee across your first three pens. No subscription.

## Batch testing
Every batch ships with third-party test documentation. The lot certificate publishes at /coas before orders leave.

## Pages
- [Home](https://olddoglongevity.com/)
- [The Dog Peptide Pen](https://olddoglongevity.com/pen)
- [How It Works](https://olddoglongevity.com/how-it-works)
- [Dosing](https://olddoglongevity.com/dosing)
- [Pricing](https://olddoglongevity.com/pricing)
- [Safety](https://olddoglongevity.com/safety)
- [FAQ](https://olddoglongevity.com/faq)
- [About](https://olddoglongevity.com/about)
- [Conditions](https://olddoglongevity.com/conditions)
- [Breeds](https://olddoglongevity.com/breeds)
- [Compare](https://olddoglongevity.com/compare)
- [Research](https://olddoglongevity.com/research)
- [Batch COAs](https://olddoglongevity.com/coas)
- [Starter guide](https://olddoglongevity.com/guide)
- [The Old Dog Journal](https://olddoglongevity.com/blog)

## Conditions
- [Arthritis in Old Dogs: Signs, Stages & Support](https://olddoglongevity.com/conditions/arthritis-in-old-dogs/) — A practical guide to canine arthritis in senior dogs: the signs owners notice, what helps day to day, and where a dog peptide pen fits alongside veterinary care.
- [Hip Dysplasia in Older Dogs: Signs & Daily Support](https://olddoglongevity.com/conditions/hip-dysplasia/) — Hip dysplasia in senior dogs: the signs, the vet workup, daily management, and where a daily peptide pen fits without overpromising.
- [CCL / ACL Tears in Dogs: Recovery & Options](https://olddoglongevity.com/conditions/ccl-tear/) — A plain-language guide to canine CCL/ACL tears: why they happen, surgery vs. conservative management, recovery timelines, and where daily support fits.
- [TPLO Recovery in Dogs: Week-by-Week Guide](https://olddoglongevity.com/conditions/tplo-recovery/) — A practical TPLO recovery guide for dog owners: the first two weeks, the rehab phase, red flags, and how to keep a daily routine without overdoing it.
- [IVDD in Dogs: Signs, Rest & Recovery](https://olddoglongevity.com/conditions/ivdd/) — IVDD in dogs explained: the signs, why rest matters, surgery vs. conservative care, and how to support an aging dog without making the injury worse.
- [Degenerative Myelopathy in Dogs: What Helps](https://olddoglongevity.com/conditions/degenerative-myelopathy/) — Degenerative myelopathy in senior dogs: the signs, the difference from arthritis, and the practical support that protects quality of life.
- [Luxating Patella in Senior Dogs: Signs & Support](https://olddoglongevity.com/conditions/luxating-patella/) — Luxating patella in older dogs: the signs, grades, surgery vs. management, and how to support a dog whose kneecap slips out of place.
- [Post-Surgery Recovery for Senior Dogs](https://olddoglongevity.com/conditions/post-surgery-recovery/) — A practical guide to senior-dog surgery recovery: restriction, rehab, red flags, and how to keep a daily routine without slowing healing.
- [Muscle Loss in Old Dogs: What Helps](https://olddoglongevity.com/conditions/muscle-loss-in-old-dogs/) — Sarcopenia and muscle loss in senior dogs: why it happens, why it matters for joints, and the practical steps that preserve strength.
- [Tendon & Ligament Injuries in Dogs](https://olddoglongevity.com/conditions/tendon-ligament-injury/) — A guide to soft-tissue injuries in dogs: the signs, the vet workup, rest and rehab, and where a daily peptide pen fits without overpromising.
- [Morning Stiffness in Old Dogs: Causes & Help](https://olddoglongevity.com/conditions/morning-stiffness/) — Morning stiffness in senior dogs: the common causes, when it is arthritis, when it is something else, and the daily routine that helps.
- [Elbow Dysplasia in Dogs: Signs & Support](https://olddoglongevity.com/conditions/elbow-dysplasia/) — Elbow dysplasia in dogs: the signs, the vet workup, daily management, and where a daily peptide pen fits alongside veterinary care.

## Breeds
- [Senior Labrador Joint Health: Risks & Support](https://olddoglongevity.com/breeds/labrador-retriever/) — Senior Labrador joint health: the risks, the early signs, the weight targets, and the daily routine that keeps a Lab moving.
- [Senior Golden Retriever Joint Health](https://olddoglongevity.com/breeds/golden-retriever/) — Senior Golden Retriever joint health: hip and elbow risks, the early signs, weight management, and a daily routine that helps.
- [Senior German Shepherd Hip & Joint Health](https://olddoglongevity.com/breeds/german-shepherd/) — Senior German Shepherd health: hip and elbow dysplasia, degenerative myelopathy, the early signs, and the daily support that helps.
- [Senior Rottweiler Joint Health](https://olddoglongevity.com/breeds/rottweiler/) — Senior Rottweiler joint health: cruciate risk, hip and elbow dysplasia, weight, and the daily routine that keeps a big dog moving.
- [Senior Bernese Mountain Dog Joint Health](https://olddoglongevity.com/breeds/bernese-mountain-dog/) — Senior Bernese Mountain Dog health: joint risks, cancer awareness, weight, and the daily support that helps a big dog stay comfortable.
- [Senior Dachshund Back & Joint Health](https://olddoglongevity.com/breeds/dachshund/) — Senior Dachshund health: IVDD risk, weight, stairs, and the daily routine that protects a long back.
- [Senior French Bulldog Joint & Spine Health](https://olddoglongevity.com/breeds/french-bulldog/) — Senior French Bulldog health: IVDD, patellar luxation, breathing, weight, and the daily support that keeps a Frenchie comfortable.
- [Senior Great Dane Joint Health](https://olddoglongevity.com/breeds/great-dane/) — Senior Great Dane health: joint risks, weight, bloat awareness, and the daily routine that helps a giant breed stay mobile.
- [Senior Cocker Spaniel Joint Health](https://olddoglongevity.com/breeds/cocker-spaniel/) — Senior Cocker Spaniel health: hip and knee risks, weight, ears, and the daily routine that keeps a Cocker comfortable.
- [Senior Corgi Back & Joint Health](https://olddoglongevity.com/breeds/pembroke-welsh-corgi/) — Senior Corgi health: IVDD, hip and knee risks, weight, stairs, and the daily support that protects a long back.

## Comparisons
- [Pawgen Alternative: A Pen, Not a Vial](https://olddoglongevity.com/compare/pawgen-alternative/) — Looking for a Pawgen alternative? Compare K9-REPAIR’s vial-and-syringe routine with The Dog Peptide Pen’s twist-to-mix, one-click format.
- [Pawgen vs Old Dog Longevity: Honest Comparison](https://olddoglongevity.com/compare/pawgen-vs-old-dog-longevity/) — A factual comparison of Pawgen K9-REPAIR and Old Dog Longevity’s The Dog Peptide Pen: format, dosing, price, routine, and the honest limits.
- [K9-REPAIR Alternative: Twist-to-Mix Pen](https://olddoglongevity.com/compare/k9-repair-alternative/) — A K9-REPAIR alternative for owners who want BPC-157 + TB-500 without reconstitution, syringes, or unit math. Compare the routines.
- [BPC-157 Pen vs Vial: Cost, Dosing, Waste](https://olddoglongevity.com/compare/bpc-157-pen-vs-vial/) — A practical comparison of a BPC-157 pen and a vial: prep time, dose accuracy, waste, travel, storage, sharps, and true 28-day cost.
- [Best Dog Peptide Pen (2026): 5 Options Compared](https://olddoglongevity.com/compare/best-dog-peptide-pen/) — A factual comparison of dog peptide pen options in 2026: format, dosing, price, and where each one fits. Includes where The Dog Peptide Pen loses.
- [BPC-157 vs Glucosamine for Dogs](https://olddoglongevity.com/compare/bpc-157-vs-glucosamine/) — BPC-157 and glucosamine are not the same category. A plain-language comparison of what each is studied for, what it costs, and where each fits.
- [Injectable vs Oral BPC-157 for Dogs](https://olddoglongevity.com/compare/injectable-vs-oral-bpc-157/) — A plain comparison of injectable and oral BPC-157 for dogs: absorption, dose accuracy, routine, cost, and the honest evidence gap.
- [Librela vs Peptide Support for Dogs](https://olddoglongevity.com/compare/librela-vs-peptide-support/) — Librela is an FDA-approved monthly injection for canine osteoarthritis pain. Peptide support is a research-use adjunct. Here is the honest difference.

## Research
- [BPC-157 for Dogs: What the Research Shows](https://olddoglongevity.com/research/bpc-157-for-dogs/) — BPC-157 for dogs: what it is, what the preclinical research studies, what has not been proven, and how to talk to your vet about it.
- [TB-500 for Dogs: Thymosin Beta-4, Plainly](https://olddoglongevity.com/research/tb-500-for-dogs/) — TB-500 for dogs: the thymosin beta-4 fragment, the preclinical evidence, the gaps, and the questions to ask your vet.
- [Why a Dual-Chamber Pen: Mixing & Stability](https://olddoglongevity.com/research/dual-chamber-stability/) — Why BPC-157 and TB-500 are kept separate until the twist, what stability means for a dog peptide pen, and why mixing fresh matters.
- [BPC-157 + TB-500: Why They Are Stacked](https://olddoglongevity.com/research/bpc-157-tb-500-stack/) — Why BPC-157 and TB-500 are commonly paired, what the preclinical rationale is, and what the evidence does not prove.

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Sold for research purposes only. Not intended to diagnose, treat, cure, or prevent any disease. Consult your veterinarian before use.