Retatrutide for Sale
Triple-agonist research for weight and body composition.
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Retatrutide is an investigational triple agonist acting on GLP-1, GIP and glucagon receptors. It is among the most closely watched research compounds in metabolic science for its effects on appetite signaling and body composition.
Buy retatrutide online from Healio. Retatrutide for sale, also searched as GLP-3 retatrutide or reta, comes as 10mg, 20mg and 30mg vials, supplied as a research peptide for laboratory use only and shipped from the USA with the batch certificate of analysis published before you order. You can order retatrutide straight from this page.
What is retatrutide?
Retatrutide (development code LY3437943) is a synthetic peptide studied as a triple receptor agonist. It activates the GLP-1, GIP and glucagon receptors, which makes it the most mechanistically ambitious compound in the metabolic peptide class and the reason researchers buy retatrutide for comparative work against single and dual agonists.
Semaglutide targets one receptor. Tirzepatide targets two. Retatrutide adds glucagon, a pathway associated with energy expenditure rather than appetite alone. That third target is the entire scientific interest, and it is also why the compound arrived later and carries thinner published data than its predecessors.
Retatrutide research applications
Published work on retatrutide has concentrated on metabolic regulation, appetite signalling and body composition endpoints. Phase 2 results published in 2023 attracted significant attention across endocrinology and metabolic research, and phase 3 programmes remain ongoing.
Laboratories sourcing this compound typically use it for receptor binding and selectivity studies, comparative agonist work against tirzepatide and semaglutide, metabolic pathway characterisation, and energy expenditure research where the glucagon component is the variable of interest.
How retatrutide works
The three receptors do different jobs. GLP-1 signalling slows gastric emptying and reduces appetite drive. GIP is a second incretin that appears to amplify GLP-1 effects when co-targeted, having been dismissed for years as the less useful of the two. Glucagon, counterintuitively for anyone who remembers it as the blood sugar hormone, is associated with increased energy expenditure when engaged alongside the incretins rather than in isolation.
Retatrutide is a 39-amino-acid peptide engineered for extended half-life, which is what makes weekly-interval study designs feasible in the published trial literature.
Retatrutide vs tirzepatide vs semaglutide
| Property | Semaglutide | Tirzepatide | Retatrutide |
|---|---|---|---|
| Receptor targets | GLP-1 | GLP-1, GIP | GLP-1, GIP, glucagon |
| Trial maturity | Most established | Well established | Phase 3 ongoing |
| Primary research focus | Appetite, glucose | Appetite, body composition | Appetite plus energy expenditure |
| Published data volume | Largest | Large | Smallest, growing fastest |
The full comparison is covered in peptides for weight loss for women.
Retatrutide reconstitution and handling
Retatrutide ships lyophilized and requires reconstitution with bacteriostatic water before use in solution. Introduce the diluent slowly against the vial wall rather than directly onto the powder, and allow the material to dissolve without agitation. Peptides are sensitive to shear force, and vigorous shaking degrades them.
Healio stocks bacteriostatic water for this purpose. The full procedure is covered in how to reconstitute peptides. The Retatrutide calculator turns vial strength and water volume into a concentration.
Retatrutide storage and stability
Lyophilized retatrutide is stable for extended periods at minus 20 degrees Celsius in the original sealed vial, protected from light. Once reconstituted, the solution requires refrigeration and has a considerably shorter usable window. Avoid repeated freeze and thaw cycles, which are one of the most common causes of degradation in laboratory handling.
Retatrutide price
Retatrutide comes in 3 sizes. Ordering more than one vial lowers the price of every vial in the order. The table shows the retatrutide price per vial and per mg for every size. That retatrutide cost is the price per vial before shipping. For the best price per vial on retatrutide, order three or more.
| Size | Vials in order | Price per vial | Price per mg |
|---|---|---|---|
| Retatrutide 10mg | 1 vial | $68.99 | $6.90 |
| 2 vials 5% off | $65.54 | $6.55 | |
| 3 or more vials 10% off | $62.09 | $6.21 | |
| Retatrutide 20mg | 1 vial | $114.99 | $5.75 |
| 2 vials 5% off | $109.24 | $5.46 | |
| 3 or more vials 10% off | $103.49 | $5.17 | |
| Retatrutide 30mg | 1 vial | $149.99 | $5.00 |
| 2 vials 5% off | $142.49 | $4.75 | |
| 3 or more vials 10% off | $134.99 | $4.50 |
Prices are in US dollars. The multi-vial discount is applied automatically in the cart. Shipping is free on orders over $185.
Where to buy Retatrutide in the US
Searching for where to buy retatrutide peptide? The best place to buy retatrutide is a vendor that publishes its testing first. A vial is only worth what its testing is worth, so five checks separate a reliable US source from a reseller. This is how Healio meets each one.
- A certificate of analysis for the exact batch. The retatrutide report for batch HEALIO-RETA-2602 is published before you order, not emailed after you have paid.
- Testing by a lab that is not the seller. The report comes from Quantum Life Sciences in Portland, Maine, an independent laboratory, and carries its own certificate number.
- Identity as well as purity. HPLC measures how pure the powder is. Mass spectrometry (ESI-MS) confirms that it is retatrutide in the first place. A report with only one of the two is half a report.
- A lot number you can trace. The lot number on your vial ties to its own report, so you can check the document against the product in your hands.
- US dispatch and plain terms. Orders ship from the United States, and the shipping and returns policy is public before you buy.
For a longer look at judging any supplier, read the best peptide companies.
Retatrutide lab results
The current Retatrutide batch was tested on 23 June 2026 by Quantum Life Sciences. The certificate covers the 10 mg vial. Purity is measured by HPLC and identity is confirmed by mass spectrometry. The summary below is taken from the certificate of analysis. Reading the retatrutide COA takes a minute: purity by HPLC, identity by mass spectrometry and endotoxins are in the first rows.
| Batch | HEALIO-RETA-2602 |
|---|---|
| Lot number | RETA-260634-03 |
| Purity (HPLC) | 99.3% (specification 98.0% or higher) |
| Identity (ESI-MS) | Confirmed, conforms to the reference standard (4731.33) |
| Mass found | 10.12 mg (labeled 10 mg) |
| Endotoxins (LAL) | Under 0.5 EU/mg (limit 5 EU/mg) |
Retatrutide reviews: is Healio a legit retatrutide source?
Reading retatrutide reviews and complaints, or asking whether a retatrutide brand is legit? The useful evidence is what you can check yourself, because reviews only help if you can check them.
- Match the lot number on your vial to the retatrutide certificate of analysis.
- Look up the testing laboratory named on the certificate and confirm it is not Healio.
- Read how the content on this site is written and checked on the editorial standards page.
- If a seller will not publish a batch report for the product you are buying, treat that as your answer.
Retatrutide payment and shipping
Looking for fast retatrutide shipping? Orders ship from the United States to US addresses. Weekday orders placed before 2:00 PM ET usually go out the same business day, and later orders go the next business day. For retatrutide overnight shipping, choose Next Day Air at checkout. Transit is usually 2 to 10 business days, which is a carrier estimate and not a guarantee. Pay by credit or debit card at checkout.
| Shipping option | Price |
|---|---|
| Standard Shipping (Ground) | $14.99 (free over $185) |
| 2-Day Air | $23.99 |
| Next Day Air | $54.99 |
All sales are final. Read the full shipping and returns policy before you order.
Retatrutide research tools and guides
- Retatrutide calculatorTurn vial strength and water volume into concentration and syringe units. Arithmetic only.
- Retatrutide certificate of analysisThe full lab report for the current batch.
- What retatrutide isA plain-language introduction to the compound.
- Retatrutide research benefitsWhat the published research looks at.
- Retatrutide vs tirzepatideTwo compounds, compared.
- Retatrutide vs semaglutideWhat the trial data compares.
- Tirzepatide for saleThe dual-agonist compared most often.
- Semaglutide for saleThe single-agonist reference compound.
Research focus
- Weight management research
- Appetite and satiety signaling studies
- Body composition models
- Metabolic wellness research
Who it’s for
For researchers focused on
| Scientific name | Retatrutide (LY3437943) |
|---|---|
| CAS number | 2381089-83-2 |
| Molecular formula | C221H342N46O68 |
| Molecular weight | 4731.3 g/mol |
| Sequence | Modified 39-residue peptide |
| Purity | 99%+ (HPLC) |
| Form | Lyophilized powder |
| Appearance | White to off-white powder |
Store the lyophilized powder at -20°C, protected from light. Brief exposure to room temperature during shipping does not affect stability.
After reconstitution, keep refrigerated at 2 to 8°C and use within the research window. Do not freeze the reconstituted solution.
For laboratory research use only. Reconstitute with bacteriostatic water and handle with appropriate protective equipment.
Working out the water volume? Use the Retatrutide calculator.
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Retatrutide FAQ
Where can I buy retatrutide in the US?
Healio sells retatrutide direct from the United States, with the batch certificate of analysis published before you order. It is supplied for laboratory research use only.
How much does retatrutide cost?
Retatrutide prices are: 10mg is $68.99, about $6.90 per mg; 20mg is $114.99, about $5.75 per mg; 30mg is $149.99, about $5.00 per mg. Ordering two vials of the same size takes 5% off each, and three or more takes 10% off each. Shipping is free on orders over $185.
Is Healio retatrutide third-party tested?
Yes. Each batch is tested by an independent US laboratory for purity by HPLC and for identity by mass spectrometry. The current batch measured 99.3% purity with identity confirmed, and the full report is on the retatrutide COA page.
How fast does retatrutide ship?
Weekday orders placed before 2:00 PM ET usually ship the same business day. Standard ground is $14.99 and free over $185, 2-Day Air is $23.99 and Next Day Air is $54.99. Delivery times are carrier estimates and are not guaranteed.
What payment methods does Healio accept?
Credit and debit cards, paid at checkout.
How do I reconstitute retatrutide?
Lyophilized retatrutide is reconstituted with bacteriostatic water. The retatrutide calculator converts vial strength and water volume into concentration and syringe units. It is arithmetic only and does not recommend an amount.
Is retatrutide for human use?
No. Healio supplies retatrutide strictly for laboratory research. It is not for human or veterinary use, and it is not a drug, supplement, food or cosmetic.
What is retatrutide used for in research?
Metabolic and appetite signalling research, receptor selectivity studies, and comparative work against single and dual agonists. It is supplied strictly as a laboratory research material and is not for human use.
How does retatrutide differ from tirzepatide?
Tirzepatide activates two receptors, GLP-1 and GIP. Retatrutide adds a third, glucagon, which is associated with energy expenditure. Tirzepatide has the more mature published trial record; retatrutide has the broader mechanism and the newer data.
Is retatrutide FDA approved?
No. Retatrutide is an investigational compound in ongoing clinical development. It is supplied here for laboratory research only and has not been evaluated by the FDA for any use.
