Buy Tirzepatide 40mg Auto-Injection Pen — Pre-Order
The Tirzepatide 40mg Auto-Injection Pen is the newest format in our GLP-1 research peptide lineup: a prefilled pen containing 40 mg total tirzepatide (LY3298176), ready to use straight out of the box. Pre-order today to reserve a pen from the first batch. Pens begin shipping October 25, 2026, and supply is limited.
Why Pre-Order Now
- Limited first batch. Pre-orders are filled first come, first served. Once this allocation is gone, the next batch date is not guaranteed.
- Lock in today’s price. Reserve your pen at the pre-order price before release.
- Guaranteed spot in line. Your pen is set aside for you as soon as your order is placed.
- Ships on release. Pre-orders go out starting October 25 with tracking.
What You Get
| Product | Tirzepatide Auto-Injection Pen |
| Total content | 40 mg tirzepatide |
| Format | Prefilled auto-injection pen |
| Compound | Tirzepatide (LY3298176), a dual GIP/GLP-1 receptor agonist |
| Availability | Pre-order — ships October 25, 2026 |
| Supply | Limited first batch |
Pen vs. Vial vs. Cartridge
| Format | What it involves |
|---|---|
| 40mg Auto-Injection Pen (this listing) | Complete prefilled pen. Nothing to mix, nothing else to buy. |
| Tirzepatide lyophilized vial | Powder that must be reconstituted with bacteriostatic water before use. |
| Tirzepatide pen cartridge | Prefilled cartridge that requires the V3 auto-injection pen, sold separately. |
Pre-Order Shipping
Pre-orders begin shipping October 25, 2026, using the shipping method you choose at checkout. We ship to U.S. addresses only, Monday through Friday. If you also need in-stock items right away, place those on a separate order so they are not held for the pen release.
Tirzepatide Pen for Sale — 40mg Prefilled Injection Pen
Looking to buy a tirzepatide pen online? This tirzepatide injection pen comes prefilled with 40 mg total tirzepatide, so there is no powder to reconstitute, no bacteriostatic water and no vial-to-syringe transfer. It is a complete, standalone tirzepatide pen injector — add it to your cart, check out, and your pen is reserved from the first batch.
Tirzepatide Pen Price
The tirzepatide pen price is listed per pen at the top of this page, for 40 mg total tirzepatide in one prefilled auto-injector. Pre-order pricing is locked in when you check out, even if the price changes after release.
Where to Buy a Tirzepatide Pen Online
- U.S. store, U.S. shipping. Every order ships to U.S. addresses with tracking, Monday through Friday.
- Your choice of speed. Pick Ground, 2-Day or Next Day at checkout.
- COAs on request. Ask for the certificate of analysis for this product and we will send it.
- Earn rewards. Registered customers earn loyalty points on every order.
About Tirzepatide
Tirzepatide (LY3298176) is a dual agonist of the GIP and GLP-1 receptors. Tirzepatide is the active compound in Eli Lilly’s prescription brands Zepbound® and Mounjaro®. Prefer a different format? Shop tirzepatide vials, tirzepatide pen cartridges for the V3 pen, or the Retatrutide 40mg Auto-Injection Pen. See every option in GLP-1 research peptides.
Frequently Asked Questions
When will my Tirzepatide pen ship?
Pre-orders begin shipping October 25, 2026. You will receive tracking when your order ships.
Is the pen prefilled?
Yes. The pen arrives prefilled with 40 mg total tirzepatide. There is no reconstitution step.
Do I need the V3 pen?
No. The V3 pen is for our pen cartridges. This auto-injection pen is a complete, standalone unit.
How many pens are available?
Supply for the first batch is limited and pre-orders are filled in the order they are placed. Pre-order now to secure yours.
How much does a tirzepatide pen cost?
The current price for the 40mg tirzepatide pen is shown at the top of this page. One pen contains 40 mg total tirzepatide.
Where can I buy a tirzepatide pen?
Right here. MyGLP1Store sells the tirzepatide 40mg injection pen online and ships to U.S. addresses with tracking.
Is this the same as a Zepbound or Mounjaro pen?
No. Zepbound and Mounjaro are Eli Lilly’s FDA-approved brand pens, dispensed by prescription. This tirzepatide injection pen is a research product sold by MyGLP1Store and is not made, sold or endorsed by Eli Lilly.
Is there a refillable injection pen for tirzepatide?
Yes. If you want a reusable device, pair the V3 Auto-Injection Pen Kit with prefilled tirzepatide pen cartridges. This 40mg pen is the all-in-one option: no separate pen or cartridge to buy.
Reconstitution & Research Reference
Sourced direct from the manufacturer. No distributors, no repackaging, no middlemen.
Every order ships with free bacteriostatic water for reconstitution. Typical laboratory workflow: reconstitute the lyophilized peptide with bacteriostatic water, calculate the concentration per vial, and store according to the product storage guidance.
Open the Reconstitution Calculator
About the free bacteriostatic water
For laboratory research use only. Not for human consumption.
Read the BAC water concentration and storage guide · Buy additional BAC water for peptides
Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet.