Retatrutide Peptide Vials (LY3437943)
Free Priority Shipping on Orders $99+
Retatrutide (LY3437943), also called Reta or GLP-3, is supplied here as a lyophilized research peptide in 10–50 mg vials, 10-vial packs and bulk powder. Orders ship from U.S. inventory, and every lot is matched to a published COA. For volume pricing, see bulk Retatrutide.
Choose a vial size and formulation below. Standard and Mannitol Free are separate formulations, each with its own lot reports. For laboratory research use only. Not for human or veterinary use.
From $120.00
Lab reports & batch history 6 current · 10 prior reports View lab reportsClose
View laboratory methods and results in each report.
Prior batch reports (10)
Buy With Confidence
Check the lot, review the results and see our report history—all before you order. Our team is here for product details, shipping and order support.
Buy Retatrutide peptide (LY3437943) from BulkGLP in 10mg to 50mg research vials and ten-vial packs, shipped from U.S. inventory in Dallas, Texas. Retatrutide, often shortened to Reta and listed by many suppliers as GLP-3, is a single synthetic peptide studied as a triple agonist at the GLP-1, GIP, and glucagon receptors. Every current lot has a published lab report, with HPLC purity results from 99.50% to 99.98%, so you can check the numbers before you order.
Choose your vial size and formulation in the selector above. Orders paid before 2 PM Central on a business day ship the same day. For in-vitro laboratory research use only. Not for human or veterinary use.
Retatrutide Prices by Vial Size
BulkGLP has Retatrutide peptide for sale as Standard 10mg, 12mg, 15mg, 20mg, 30mg, and 50mg single vials, and as ten-packs of 10mg, 15mg, 20mg, or 30mg vials. Mannitol Free Retatrutide comes in 10mg, 15mg, 20mg, and 30mg single vials. In a ten-pack the size is per vial, so a 10mg ten-pack holds ten 10mg vials (100mg total). Larger vials and ten-packs cost less per milligram. The table below updates automatically with current prices and stock.
| Configuration | Formulation | Vials | Nominal total | Price | Price per vial | Price per mg | Availability |
|---|---|---|---|---|---|---|---|
| 10mg | Standard (Default) | 1 | 10 mg | $120.00 | $120.00 | $12.00 | In stock |
| 12mg | Standard (Default) | 1 | 12 mg | $133.00 | $133.00 | $11.08 | In stock |
| 15mg | Standard (Default) | 1 | 15 mg | $149.00 | $149.00 | $9.93 | In stock |
| 20mg | Standard (Default) | 1 | 20 mg | $189.00 | $189.00 | $9.45 | In stock |
| 30mg | Standard (Default) | 1 | 30 mg | $228.00 | $228.00 | $7.60 | In stock |
| 50mg | Standard (Default) | 1 | 50 mg | $346.00 | $346.00 | $6.92 | In stock |
| 10mg - 10 Pack | Standard (Default) | 10 | 100 mg | $949.00 | $94.90 | $9.49 | In stock |
| 15mg - 10 Pack | Standard (Default) | 10 | 150 mg | $1,193.00 | $119.30 | $7.95 | In stock |
| 20mg - 10 Pack | Standard (Default) | 10 | 200 mg | $1,369.00 | $136.90 | $6.85 | In stock |
| 30mg - 10 Pack | Standard (Default) | 10 | 300 mg | $1,799.00 | $179.90 | $6.00 | In stock |
| 10mg | Mannitol Free | 1 | 10 mg | $153.00 | $153.00 | $15.30 | In stock |
| 15mg | Mannitol Free | 1 | 15 mg | $193.00 | $193.00 | $12.87 | Out of stock |
| 20mg | Mannitol Free | 1 | 20 mg | $232.00 | $232.00 | $11.60 | Out of stock |
| 30mg | Mannitol Free | 1 | 30 mg | $281.00 | $281.00 | $9.37 | Out of stock |
Prices use the store currency and shop tax-display setting. Unit prices use nominal labeled amounts and are rounded; shipping and other applicable checkout charges are separate. Confirm the selected variation and checkout for the current offer. Read the matching lot report for analytical results.
Need more than a ten-pack? See bulk Retatrutide for wholesale pricing tiers, or order Retatrutide lyophilized powder in bulk quantities. The Retatrutide cost and price guide compares every option.
Standard vs. Mannitol Free Retatrutide
Standard is the default formulation. Mannitol Free vials are made without mannitol, a bulking agent often used in freeze-dried peptides. The two are separate options with separate lot reports, so make sure the label on your vial and the report you are reading match the formulation you ordered.
Retatrutide 10-Packs (10-Vial Kits)
A Retatrutide 10-pack is a kit of ten sealed vials of the same size, so a 10mg 10-pack holds ten 10mg vials (100mg total). 10-packs cost less per vial than single vials and ship with the same lot documentation. Choose 10mg, 15mg, 20mg or 30mg “10 Pack” in the size selector above.
| 10-pack | Price | Per vial | Savings |
|---|---|---|---|
| 10 mg × 10 (100 mg) | $949.00 | $94.90 | Save 21% |
| 15 mg × 10 (150 mg) | $1,193.00 | $119.30 | Save 20% |
| 20 mg × 10 (200 mg) | $1,369.00 | $136.90 | Save 28% |
| 30 mg × 10 (300 mg) | $1,799.00 | $179.90 | Save 21% |
Ordering more than a few packs? See bulk Retatrutide pricing or ask for a Retatrutide wholesale quote.
Retatrutide COA and Lab Test Results
Each Retatrutide lot is tested before it is sold. The current reports are listed below. Match the lot number printed on your vial to the report for your size.
| Vial size | Lot | Measured content | HPLC purity | Identity | Report |
|---|---|---|---|---|---|
| 10 mg | 062503 | 11.20 mg | 99.87% | LC-MS identity confirmed | 2606190261, PDF |
| 12 mg | 062503 | 13.75 mg | 99.50% | Identity confirmed in report summary | 2605210278, PDF |
| 15 mg | 062503 | 14.91 mg | 99.81% | See original report | 2604170169, image |
| 20 mg | 062503 | 22.69 mg | 99.81% | LC-MS identity confirmed | 2605210279, PDF |
| 30 mg | 062503 | 29.84 mg | 99.98% | See original report | 2604170176, image |
| 50 mg | 062504 | 54.13 mg | 99.87% | Identity confirmed in report summary | 2608100929, PDF |
HPLC purity shows what share of the sample is the target peptide rather than related impurities. LC-MS confirms identity by molecular mass, and measured content is the number of milligrams found in the tested vial. Full documents and prior lots are in the batch-report archive, and our guide on how to read a peptide COA explains each field.
What Is Retatrutide?
Retatrutide (research code LY3437943) is an investigational peptide developed by Eli Lilly and Company. It is one molecule designed to activate three receptors: GLP-1, GIP, and glucagon. That is why it is called a triple agonist, and why it is nicknamed GLP-3. It is not a blend of three peptides. Its design and early study results were published by Coskun and colleagues in the LY3437943 discovery study (Cell Metabolism, 2022).
Retatrutide is not approved by the FDA. For a full overview of the research, read What Is Retatrutide? For supplier checks, see where to buy Retatrutide.
Retatrutide Specifications
- Name
- Retatrutide
- Research code
- LY3437943
- Other names
- Reta, Reta peptide, GLP-3, GLP3 Retatrutide
- CAS number
- 2381089-83-2
- Molecular formula
- C221H342N46O68
- Molar mass
- 4731.33 g/mol (about 4.73 kDa)
- Receptor targets
- GLP-1 receptor, GIP receptor, and glucagon receptor (triple agonist)
- Developer
- Eli Lilly and Company
- Form
- Lyophilized (freeze-dried) powder in sealed vials
- Purity, current lots
- 99.50% to 99.98% by HPLC
Reference records: PubChem compound record and PubChem substance record.
Retatrutide vs. Tirzepatide vs. Semaglutide
All three are studied in metabolic research, but they are different molecules with different receptor targets.
| Compound | Receptor targets | Type | Developer |
|---|---|---|---|
| Retatrutide (LY3437943) | GLP-1, GIP, glucagon | Triple agonist | Eli Lilly |
| Tirzepatide (LY3298176) | GIP, GLP-1 | Dual agonist | Eli Lilly |
| Semaglutide | GLP-1 | GLP-1 analogue | Novo Nordisk |
Sources: the Tirzepatide (LY3298176) discovery paper and the Semaglutide discovery paper. BulkGLP also carries Tirzepatide and Semaglutide research peptides. For more, read is Tirzepatide a peptide?
Retatrutide Storage and Reconstitution
Retatrutide ships as a lyophilized powder, which is more stable than a solution. Keep sealed vials cold and away from light, and follow the storage conditions in the lot documents. Our peptide storage and shelf-life guide covers refrigerated and frozen storage in more detail.
For laboratory reconstitution, BulkGLP sells bacteriostatic water (reconstitution solution) with 0.9% benzyl alcohol, two 10 mL vials per box. The peptide reconstitution calculator works out concentration from vial size and volume. Your lab’s own method should set the solvent and volume.
Retatrutide Shipping in the USA
All Retatrutide orders ship from our Dallas, Texas inventory. Orders paid before 2 PM Central on a business day ship the same day. Later orders, weekends, and U.S. holidays ship the next business day. Standard delivery usually takes 3 to 5 business days, Expedited 2 to 3, and Overnight 1 where available. Tracking is emailed when your order ships, and orders of $99 or more get free priority shipping. See the shipping policy for details, or email support@bulkglp.com for bulk or same-lot requests.
Retatrutide FAQ
Where can I buy Retatrutide online?
You can buy Retatrutide peptide directly on this page. Choose a vial size and formulation above, check the lot report, and check out. BulkGLP ships from U.S. inventory in Dallas, Texas, with same-day shipping on orders paid before 2 PM Central.
How much does Retatrutide cost?
Price depends on vial size, formulation, and whether you buy a single vial or a ten-pack. The price table above shows the current price, price per vial, and price per mg for every option. Larger vials and ten-packs have the lowest cost per mg, and bulk Retatrutide pricing is available for larger orders.
Is Retatrutide the same as GLP-3?
Yes. GLP-3 is an informal name for Retatrutide. There is no natural hormone called GLP-3. The name comes from Retatrutide acting at three receptors (GLP-1, GIP, and glucagon), one more than dual agonists such as Tirzepatide.
What sizes of Retatrutide are available?
Standard single vials come in 10mg, 12mg, 15mg, 20mg, 30mg, and 50mg. Ten-packs come in 10mg, 15mg, 20mg, and 30mg vials. Mannitol Free single vials come in 10mg, 15mg, 20mg, and 30mg. Stock varies by option, so check the price table above.
Do you sell Retatrutide in 10-packs or kits?
Yes. Retatrutide 10-packs (10-vial kits) come in 10mg, 15mg, 20mg and 30mg vials. Each pack holds ten sealed vials of the same size. Select a “10 Pack” size in the selector above.
How much do you save with a Retatrutide 10-pack?
At current prices, a 10-pack costs about 20% to 28% less per vial than single vials, depending on the size. The 10-pack table above shows the live price per vial for each size.
Does every Retatrutide lot come with a COA?
Yes. Current lot reports are linked in the COA table above, and older reports are in the batch-report archive. Match the lot number on your vial to the report for your size.
What is the difference between Standard and Mannitol Free Retatrutide?
Mannitol Free vials are made without mannitol, a bulking agent often used in freeze-dried peptides. Standard is the default formulation. Each has its own options and lot reports.
How fast does Retatrutide ship?
Orders paid before 2 PM Central on a business day ship the same day. Standard delivery in the U.S. usually takes 3 to 5 business days, Expedited 2 to 3, and Overnight 1 where available.
Is Retatrutide FDA approved?
No. Retatrutide is an investigational compound and is not approved by the FDA. BulkGLP sells it for in-vitro laboratory research only. It is not for human or veterinary use.
For in-vitro laboratory research and development use only. Not for human or veterinary use.
| Weight | 0.1 lbs |
|---|---|
| Dimensions | 2 × 2 × 2 in |
| Size | 10mg, 12mg, 15mg, 20mg, 30mg, 50mg, 10mg – 10 Pack, 15mg – 10 Pack, 20mg – 10 Pack, 30mg – 10 Pack |
| Formulation | Standard (Default), Mannitol Free |
