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Free Express shipping over $300 · Ships from CanadaFree Express over $300

Horizon® Peptides

Research area: Weight LossFormat: Vials

Retatrutide(GLP-3)

Lyophilized vial · 10mg to 40mg

$149.99 CAD

Strength
Pack size

In stock

Orders placed before 2:00 PM ET, Monday to Friday, typically ship the same business day.

  • Free Express shipping on orders over $300
  • Ships from Canada
  • For laboratory research use only

GLP-3 (RT) Peptide is supplied as lyophilized powder in sealed vials, in 10mg, 20mg, 30mg and 40mg. Available as 1 vial, 3 vials or a 10-pack. Supplied strictly for research use only.

About Retatrutide(GLP-3)

GLP-3 (RT) peptide in Canada is supplied by Horizon Peptides as a lyophilized powder in sealed research vials, stocked in 10 mg, 20 mg, 30 mg and 40 mg sizes with single-vial, 3-vial and 10-vial pack options. GLP-3 (RT) is a synthetic multi-receptor peptide studied in laboratory models of metabolic receptor signalling.

GLP-3 (RT) is a long synthetic sequence of 27 residues incorporating several Aib (alpha-aminoisobutyric acid) substitutions. Aib is not one of the standard twenty amino acids; it is introduced deliberately because it resists enzymatic cleavage, and its repeated appearance here marks the molecule out as engineered for stability rather than derived intact from nature.

The sequence is studied in laboratory settings for its reported interaction with more than one metabolic receptor family, including GLP-1, GIP and glucagon receptor pathways. Research using it is concerned with coordinated receptor activity in controlled models rather than with any applied outcome.

Key research areas

  • Multi-receptor metabolic signalling models covering GLP-1, GIP and glucagon pathways
  • Receptor-binding and selectivity assays
  • Peptide stability research involving Aib-substituted sequences
  • Comparative structure-activity work against single-receptor analogues
  • Formulation and solubility studies for long synthetic peptides

Research areas describe how this material appears in published laboratory work. They are not claims about any effect in people or animals.

Other formats and related research peptides

The same compound is also stocked as the GLP-3 (RT) pre-mixed pen, supplied ready-prepared rather than as a powder. Researchers comparing metabolic receptor sequences frequently also work with tirzepatide and semaglutide.

Specifications

Formatlyophilized powder in a sealed research vial
Sizes available10mg, 20mg, 30mg, and 40mg
Pack options1 vial, 3 vials, or 10 pack
SKU of the selected option HP-RETATRUTIDE-10MG-1
Research area Weight Loss
Supplied for Laboratory research use only

Retatrutide: compound data

ClassSynthetic acylated 39-residue peptide; GIP, GLP-1 and glucagon receptor agonist
SequenceY-Aib-QGTFTSDYSI-αMeL-LDKK(acyl)AQ-Aib-AFIEYLLEGGPSSGAPPPS-NH2
Molecular formulaC221H342N46O68
Molecular weight4731 g/mol
PubChem CID171934787 (PubChem, opens in a new tab)

Compound data describes the molecule, not a batch. It comes from the sources listed on the Retatrutide Research page.

Research background

Retatrutide, first published under the code LY3437943, is a synthetic peptide that activates three hormone receptors at once: those for GIP (glucose-dependent insulinotropic polypeptide), GLP-1 (glucagon-like peptide-1) and glucagon.

Retatrutide Research What the published literature reports, with every source linked

A summary of published laboratory research. It is not a claim about any effect in people or animals.

Testing and documents

Batch documents are published on the Lab Results page as they become available, searchable by product or batch.

Lab Results

What a certificate of analysis shows

  • Identity

    Mass spectrometry checks the measured molecular mass against the expected one: is this the right molecule.

  • Purity

    HPLC separates a sample and reports the target as a share of everything detected.

  • Batch

    A certificate describes one batch. The batch on the document should match the one you are asking about.

  • Date and analyst

    The document should say who carried out the analysis and when.

Not every batch has a published document. Where one exists, it is listed; this page says nothing about results.

Shipping and handling

  • Dispatch

    Orders placed before 2:00 PM ET, Monday to Friday, typically ship the same business day.

  • Shipping

    Express shipping is free on orders over $300 before tax. Other options and their prices are shown at checkout.

  • Delivery

    We ship to addresses within Canada. A tracking link is emailed when the order ships.

  • Storage

    Keep lyophilized material sealed, dry and away from light, in a cool place or refrigerated. Let a cold vial reach room temperature before opening so moisture does not condense inside it.

What vial sizes are available?

GLP-3 (RT) is stocked in 10 mg, 20 mg, 30 mg and 40 mg vials, each available singly, as a 3-vial pack, or as a 10 pack.

How does the vial differ from the pre-mixed pen?

The vial contains lyophilized powder for laboratories preparing their own solutions. The pre-mixed pen arrives ready-prepared.

When does an order ship?

Orders ship from within Canada, Monday to Friday. Orders placed before 2:00 PM ET typically ship the same business day, and a tracking link is emailed when the order ships. See the shipping policy.

Can an order be returned?

All sales are final. If an item arrives damaged or defective, contact us within 72 hours of delivery with your order number and photos. See the return policy.

What is this product supplied for?

Laboratory research use only. It is not for human or veterinary consumption and is not intended to diagnose, treat, cure or prevent any condition. The purchaser is responsible for handling it in line with applicable laws and laboratory safety practice.

Supplies

Laboratory supplies

All supplies
  • BAC Water From $19.99Bacteriostatic water · 30mL From $19.99
  • Peptide Syringes From $11.99Sterile laboratory syringes From $11.99
  • Alcohol Wipes From $2.9970% isopropyl prep pads From $2.99

For research use only

Every product on this site is supplied for laboratory research use only. Products are not for human or veterinary consumption and are not intended to diagnose, treat, cure or prevent any condition. We do not provide dosing or administration guidance. Read our research use policy.