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Old Dog Longevity
BPC-157 + TB-500 · dual-chamber pen•twist to mix · weight-set clicks, once daily•third-party tested every batch · certificates at /coas•90-day guarantee · no subscription•BPC-157 + TB-500 · dual-chamber pen•twist to mix · weight-set clicks, once daily•third-party tested every batch · certificates at /coas•90-day guarantee · no subscription•

Good days, on a schedule.

The dog peptide pen
for aging dogs.

Dual-chamber BPC-157 + TB-500. Twist to mix, weight-set clicks, once daily. $119 per pen, 28-day use window.

No vials. No mixing. No math. One pen, one routine.

third-party tested every batch · 90-day guarantee · no subscription

the dog peptide pen

Twist.
Shake.
Weight-set clicks, once daily.

Two chambers keep BPC-157 and TB-500 apart until the twist. One click delivers the weight-set dose. No vials. No mixing. No math.

twistshakeclick

The stairs aren't gone.
They're waiting.

The pause before the jump. The stiff first steps. The walk that turns around early. They're not one-offs — they're the signal that a daily protocol is worth starting now.

the clear signal

36–57%radiographic OA by joint, in a 2024 clinic-population study

Roitner et al., The Veterinary Journal, 2024 →

the early signals

  • the longer pause at the bottom step
  • the walk that turns around early
  • the ball that doesn’t get chased
  • the morning that takes a minute longer

None of these is a diagnosis. They’re the reason to have the conversation.

the 60-second daily ritual

Twist. Shake. Weight-set clicks, once daily.

  1. 1

    Twist

    Turn the collar until it stops. The seal opens; the two chambers meet.

  2. 2

    Shake

    A gentle shake. The peptides mix fresh, minutes before the click.

  3. 3

    Click

    Click the weight-set number of times (1, 2, or 3 by sticker). Lift the loose neck skin.

  4. 4

    Daily

    Weight-set clicks, once daily, with food. The whole routine takes less time than filling the water.

the weight sticker

dog weightclicksdiscard
under 25 lb1 clickday 28
25–60 lb2 clicksday 28
60+ lb3 clicks · Mon–Friday 28

One pen, three stickers. Mix on day 1; discard 28 days after mixing even if clicks remain. Confirm the band with your vet.

Mix on day 1. Use for 28 days. Discard the pen 28 days after mixing even if clicks remain. Dosing bands are printed on the box sticker; confirm the plan with your veterinarian before the first click.

the protocol

One pen. One price. 28 days.

twist collartwo chambersclick dialschematic, not to scale · 60 clicks · 0.05 mL per click
The Dog Peptide Pen · dual chamber · weight sticker · weight-set clicks, once daily.

dual chamber · 60 clicks · 0.05 mL per click

The Dog Peptide Pen · weight sticker · fridge-safe · 28-day use window

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

How batch testing works →

the first release

One pen is a 28-day use window. Start with one; refill when you're ready. No lock-in.

  • →BPC-157 + TB-500, separate until you twist. Each click ≈167 mcg of each (10 mg + 10 mg per 3.0 mL).
  • →Weight-set clicks, once daily — no math at the counter.
  • →90-day guarantee across your first three pens: if it isn’t for your dog, email us.
  • →Third-party tested. Lot certificate published by batch.
choose a pack size

first lot is being finalized — reserve yours and we'll send the checkout link the moment it lands.

your code shows on this page when you tap.

first lot ships soon · waitlist comes first

The Dog Peptide Pen is sold for research purposes — not an FDA-approved drug, not a substitute for veterinary care. BPC-157 and TB-500 are research compounds; no controlled canine trials have been completed. The plan belongs to your vet.

BPC-157 + TB-500 · dual-chamber pen•twist to mix · weight-set clicks, once daily•third-party tested every batch · certificates at /coas•90-day guarantee · no subscription•BPC-157 + TB-500 · dual-chamber pen•twist to mix · weight-set clicks, once daily•third-party tested every batch · certificates at /coas•90-day guarantee · no subscription•

proof, not promises

Tested like it matters.
Said like it's true.

Every batch is tested for identity, purity, sterility, and endotoxin. The certificate is linked to the lot number on your box. If we can't prove a batch, it doesn't ship.

batch-level COA

Type the lot code from the box; see the sheet for your pen.

independent lab

Third-party lab, printed purity number, no badge theater.

the honest panel

What it supports, what it doesn’t, and what the evidence actually is.

90-day guarantee

Use it. Count the good days. If it isn’t for your dog, email us.

where it fits

Start with the dog, not the molecule.

the honest comparison

A pen is not a vial. That changes the routine.

questions owners ask

Straight answers.

The pen, the protocol, and the limits — no hedging.

What is 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, deliver one dose. One pen is a 28-day use window.

How does the twist work?

Twist the collar until it stops. The seal opens and the two chambers meet. Shake gently, refrigerate, and click the weight-set number of times, once daily. No vials, no drawing up, no math.

How many clicks does my dog need?

The sticker on the box sets it: under 25 lb, 1 click; 25–60 lb, 2 clicks; 60+ lb, 3 clicks Monday–Friday. Mix on day 1 and discard 28 days later, even if clicks remain.

Is The Dog Peptide Pen FDA-approved?

No. BPC-157 and TB-500 are research compounds, not FDA-approved drugs for dogs, and no controlled canine trials have been completed. We publish the batch testing and link the research. The plan belongs to your vet.

Will it fix a torn ligament?

No. A torn CCL/ACL is a mechanical injury. The pen is daily support for aging, stiffness, and recovery — not a substitute for surgery or veterinary care. If your dog is suddenly lame, call your vet first.

What if it doesn’t work for my dog?

Use it for 90 days across your first three pens. If you don’t see a change you can describe, email us for a full refund of those pens. Keep the pens.

The library. Receipts in long form.

the daily ritual

Start with one pen.

One pen, 60 clicks, weight-set dosing, once daily. 90-day guarantee. No lock-in.