Tirzepatide 5mg Vial: Specifications, Reconstitution, and Storage
Reviewed by the VendPeptides Editorial Team. Written from product labeling, the batch certificate of analysis and published literature. Last updated September 2026.
The Tirzepatide 5mg Vial is a research-use-only laboratory peptide supplied as a lyophilized powder in a single 5 mg glass vial.
Tirzepatide has been studied in published research as a dual GIP/GLP-1 receptor agonist, including the SURMOUNT-1 phase 3 trial reported in NEJM in 2022.
It is also known by the code LY3298176 and the brand names Mounjaro and Zepbound, and VendPeptides sells single vials and 10-vial kits from 5 mg through 60 mg.
This guide covers what the Tirzepatide 5mg Vial is, reconstitution and concentration math by vial size, safe laboratory handling, and where to buy it. For research purposes only. Not for human consumption.
What is Tirzepatide 5mg Vial?
The Tirzepatide 5mg Vial is a single glass vial containing 5 mg of lyophilized tirzepatide powder intended strictly for laboratory research. The compound is a synthetic 39-amino-acid peptide with CAS number 2023788-19-2 and is classified as a dual GIP/GLP-1 receptor agonist.
VendPeptides ships it as a sealed vial with a batch certificate of analysis (COA) and an expiry date printed on the label. For research purposes only. Not for human consumption.
The same active molecule is sold under the brand names Mounjaro and Zepbound, which are approved medicines in specific jurisdictions; the research vial is a laboratory chemical and is not approved for any medical or veterinary purpose as sold. Always confirm the exact strength and lot number on the vial label before starting any laboratory work.
Tirzepatide 5mg Vial, Mounjaro and Zepbound: are they the same?
Yes. The active molecule is the same in all three names, and LY3298176 is the original research code for tirzepatide.
The difference is regulatory status and presentation: Mounjaro and Zepbound are approved brand-name medicines, while the Tirzepatide 5mg Vial is a laboratory research chemical sold for in-vitro study only. VendPeptides does not sell brand-name medicines and does not supply material for any medical or veterinary purpose.
For laboratory records, cite the CAS number 2023788-19-2 and the specific lot number from the vial label rather than the brand name. For research purposes only. Not for human consumption.
What has Tirzepatide 5mg Vial been studied for?
Published research on tirzepatide has examined its activity as a dual GIP/GLP-1 receptor agonist in receptor-binding and metabolic assays, and the SURMOUNT-1 phase 3 trial reported in NEJM in 2022 studied it in adults with obesity.
The FDA approval information for Mounjaro describes the approved product, not the research vial. The Tirzepatide 5mg Vial as sold by VendPeptides is not approved for any medical or veterinary purpose and is not for human consumption.
For laboratory reference, read the primary literature directly and match it against the batch certificate of analysis (COA) supplied with your vial. The COA states identity, purity, and the exact mass present, and it takes priority over any general article.
Tirzepatide 5mg Vial reconstitution and concentration by vial size
Adding 1 mL (1,000 µL) of bacteriostatic water to a 5 mg vial gives 5 mg/mL.
| Vial size | 10-vial kit total | Diluent added | Resulting concentration | µg per µL |
|---|---|---|---|---|
| 5 mg | 50 mg | 1 mL (1,000 µL) | 5 mg/mL | 5 µg/µL |
| 10 mg | 100 mg | 2 mL (2,000 µL) | 5 mg/mL | 5 µg/µL |
| 15 mg | 150 mg | 3 mL (3,000 µL) | 5 mg/mL | 5 µg/µL |
| 20 mg | 200 mg | 2 mL (2,000 µL) | 10 mg/mL | 10 µg/µL |
| 30 mg | 300 mg | 3 mL (3,000 µL) | 10 mg/mL | 10 µg/µL |
The vial label and the batch certificate of analysis (COA) take priority over any table; always calculate from the actual mass stated on your lot.
Tirzepatide 5mg Vial 10mg vial reconstitution
Adding 2 mL (2,000 µL) of bacteriostatic water to a 10 mg vial gives 5 mg/mL, which is 5 µg/µL. This matches the 5 mg vial concentration and makes side-by-side laboratory comparison straightforward.
Add the diluent slowly down the inside wall of the vial, then swirl gently until the powder is fully dissolved. Do not shake. Record the diluent volume, date, and lot number in your laboratory notebook. For research purposes only. Not for human consumption.
Tirzepatide 5mg Vial 5mg vial reconstitution
Adding 1 mL (1,000 µL) of bacteriostatic water to the 5 mg vial gives 5 mg/mL, or 5 µg/µL. This is the smallest single-vial format VendPeptides sells and is convenient for low-volume assay work.
Let the vial sit at room temperature for a few minutes after adding diluent so the lyophilized cake dissolves completely. Confirm full dissolution against the batch COA before use. For research purposes only. Not for human consumption.
How long does reconstituted Tirzepatide 5mg Vial stay stable?
Reconstituted tirzepatide is generally handled within a short working window and stored refrigerated at 2-8 °C, protected from light. Stability data specific to your lot is not stated on this page; check the batch certificate of analysis (COA) and the vial label for the expiry date and recommended storage.
Lyophilized powder that has not been reconstituted should be kept frozen and dry until the day it is needed. For research purposes only. Not for human consumption.
How to handle Tirzepatide 5mg Vial safely in the laboratory
- Put on gloves, a lab coat, and eye protection before opening the vial.
- Work inside a clean bench or fume hood with the surface wiped down before and after handling.
- Inspect the vial label and confirm the lot number, strength, and expiry date against the batch certificate of analysis (COA).
- Use a fresh, sterile diluent and a new sterile filter or transfer device for each vial.
- Add diluent slowly down the vial wall and swirl gently; never shake the vial.
- Label the reconstituted vial with the concentration, diluent volume, date, and your initials.
- Store the vial upright, protected from light, at the temperature stated on the label and dispose of waste per your institution's chemical waste rules.
Warning: Poor sterile technique or a mislabeled vial can contaminate your sample and invalidate your experiment, so change tips between vials and label everything before you leave the bench.
Is Tirzepatide 5mg Vial the same as Retatrutide?
No. Tirzepatide is a dual GIP/GLP-1 receptor agonist, while retatrutide is a triple agonist studied for GIP, GLP-1, and glucagon receptor activity; they are different molecules with different CAS numbers and different molecular weights.
The Tirzepatide 5mg Vial and retatrutide vials are not interchangeable in an assay, and each requires its own reconstitution math based on the mass stated on its own label. For research purposes only. Not for human consumption.
If your protocol compares the two, keep separate labeled vials and separate COAs for each compound.
Is Tirzepatide 5mg Vial safe for humans?
No. The Tirzepatide 5mg Vial is sold for research purposes only and is not for human consumption, and it is not approved for any medical or veterinary purpose as sold.
FDA guidance on research chemicals and 'not for human consumption' labeling applies to products like this one; they are laboratory reference materials, not finished medicines. Any question about an approved medicine should go to a licensed clinician and the FDA approval information for that product.
Read the batch certificate of analysis (COA) and the vial label before use, and keep the material inside the laboratory at all times. For research purposes only. Not for human consumption.
Can Tirzepatide 5mg Vial be used for pets or animals?
No. The Tirzepatide 5mg Vial is a research-use-only laboratory chemical, is not a veterinary product, and is not approved for any medical or veterinary purpose as sold.
It must not be given to pets, livestock, or any other animal. For any animal health question, consult a licensed veterinarian.
Laboratory animal work, where permitted, is governed by your institution's ethics committee and applicable regulations, and the vial label and batch COA remain the controlling documents. For research purposes only. Not for human consumption.
Where to buy Tirzepatide 5mg Vial (5 mg to 60 mg)
VendPeptides sells the Tirzepatide 5mg Vial as a single vial and as part of a 10-vial kit, with strengths from 5 mg to 60 mg, shipped from a US warehouse. Every vial carries a batch certificate of analysis (COA) and an expiry date on the label.
Single vials include Tirzepatide Single Vial at 5 mg ($36.00), 10 mg ($55.00), 15 mg ($75.00), 20 mg ($95.00), 30 mg ($135.00), 40 mg ($175.00), 50 mg ($210.00), and 60 mg ($245.00). Bulk kits are listed under Tirzepatide 10-Vial Bulk Kit TR, from the 5Mg Kit 50Mg at $310.00 up to the 60Mg Kit 600Mg at $1,200.00.
Related research materials in the same catalog include Retatrutide 10-Vial Bulk Kit RT and Semaglutide 10-Pack Kits SM, and the full range sits in the Metabolic Research Peptides collection. For concentration math on larger formats, see Tirzepatide 10-Vial Kit: Kit Sizes, Concentration Math, and Where to Buy; for a related compound, see Semaglutide Reconstitution and Storage: Diluent Volumes, Concentration Table, and Shelf Life and Retatrutide 5mg Vial: Specifications, Reconstitution, and Storage. For research purposes only. Not for human consumption.
Frequently asked questions
Is Tirzepatide 5mg Vial safe for humans?
No. It is sold for research purposes only and is not for human consumption, and it is not approved for any medical or veterinary purpose as sold. FDA research-chemical labeling guidance applies to this type of product.
Is Tirzepatide 5mg Vial the same as Retatrutide?
No. Tirzepatide is a dual GIP/GLP-1 receptor agonist and retatrutide is a triple agonist; they are different molecules with different CAS numbers. Each needs its own reconstitution math from its own label.
How do I reconstitute a Tirzepatide 5mg Vial 10mg vial?
Add 2 mL (2,000 µL) of bacteriostatic water to the 10 mg vial to reach 5 mg/mL, or 5 µg/µL. Add the diluent down the vial wall and swirl gently; do not shake. For research purposes only. Not for human consumption.
Can Tirzepatide 5mg Vial be used for pets or animals?
No. It is a research-use-only laboratory chemical, is not a veterinary product, and is not approved for any medical or veterinary purpose as sold. Consult a licensed veterinarian for any animal health question.
Is Tirzepatide 5mg Vial the same as Mounjaro or Zepbound?
The active molecule is the same, but Mounjaro and Zepbound are approved brand-name medicines while the research vial is a laboratory chemical. Confirm the lot number and strength on the vial label and the batch COA.
Is Tirzepatide 5mg Vial a peptide, and what class is it?
Yes. It is a synthetic 39-amino-acid peptide with CAS number 2023788-19-2, classified as a dual GIP/GLP-1 receptor agonist. The batch COA states identity and purity for your lot.
Can you still buy Tirzepatide 5mg Vial?
Yes. VendPeptides lists single vials from 5 mg to 60 mg and 10-vial kits, shipped from a US warehouse with a batch COA and expiry date on every label. For research purposes only. Not for human consumption.
Sources and further reading
- Jastreboff AM et al. Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1). NEJM 2022.
- FDA — Mounjaro (tirzepatide) approval information
- PubChem — Tirzepatide
Disclaimer. This article is educational and describes laboratory handling and published literature only. It is not medical or veterinary advice and is not a substitute for a licensed professional. For research purposes only. Not for human consumption. Products are sold to qualified researchers for in-vitro and laboratory research, are not approved drugs, foods, cosmetics or devices, and are not for human or animal use. This article was written with AI assistance and reviewed by a member of the VendPeptides Editorial Team.