Name: Retatrutide 50mg
Brand: Cyprus Peptides
SKU: CYP-9073
Price: 875.00 USD
Availability: InStock

Retatrutide at a glance

Developed under the code LY3437943, retatrutide is a synthetic peptide built to act on three hormone receptors involved in nutrient handling: GLP-1, GIP and glucagon. A lipid side chain attached to the backbone lets it bind circulating albumin, which slows clearance and gives it a long duration of action in clinical pharmacology studies. Most other incretin-class candidates engage one or two of these receptors, so the three-way profile is what defines it. Listings ship as freeze-dried powder.

Price and availability

Cyprus Peptides lists this single 50mg vial, shipped from Cyprus. $875.00 buys the whole kit, which is $17.50/mg. Across 28 brands listing Retatrutide here, the middle half of prices falls between $0.733 and $4.20 per mg; this kit is above the typical range. As with every order here, the brand is paid only after you confirm delivery.

This listing: Cyprus Peptides Retatrutide

Brand: Cyprus Peptides
Other strengths: 5mg $188.00 · 12mg $380.00 · 24mg $594.00 · 60mg $946.00
Also sold by: JP 50mg $320.00 · TFC Peptides 50mg $270.00 · HK Peptide 50mg $450.00 · Uther Peptide 50mg $450.00 · Vital Edge Science Retatrutide $78.00 · Lilipeptide Retatrutide $74.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

What it is studied for

Two of its three targets, the GLP-1 and GIP receptors, belong to the incretin system. Signaling through them is studied for glucose-dependent insulin release, slower movement of food out of the stomach and reduced hunger signaling in the brain. The third target sets retatrutide apart. Glucagon-receptor activity is proposed to raise energy expenditure and increase lipid oxidation in the liver, effects researchers are trying to separate from the incretin component. How the three signals balance at the receptor level, and how that balance shapes outcomes, remains an active question in the literature.

Research and regulatory status

Phase 2 trials in people with obesity, with type 2 diabetes and with fatty liver disease have been published, reporting large reductions in body weight and liver fat compared with placebo. Larger late-stage trials have followed, and their results continue to be reported. No regulator has approved retatrutide, so it remains an investigational drug, and long-term safety and outcome data are incomplete. Anyone citing the research should work from the primary trial publications rather than secondhand summaries.

Checking the lab data

A useful report for retatrutide gives a mass spectrometry result matching the expected molecular weight of roughly 4731 g/mol, which confirms the lipidated full-length peptide rather than a truncated or unmodified sequence. Alongside that, look for an HPLC purity figure with the chromatogram attached, the measured peptide content per vial compared with the label, and a note that the lyophilized cake is white and intact. The testing lab and batch number should be named.

This listing has no third-party report on file yet. The lab reports directory and the Retatrutide page show which brands do publish testing.

Listing details

Compound: Retatrutide
Synonyms: LY3437943
Class: Investigational triple GLP-1/GIP/glucagon receptor agonist
Format: Lyophilized (freeze-dried) powder
Molecular formula: C221H342N46O68
Molecular weight: ~4731.3 g/mol
Vial strength: 50mg
Total content: 50 mg
Price per mg: $17.50
Sold by: Cyprus Peptides
Ships from: Cyprus
Lab report: Not yet published

Storage and preparation

Keep unopened freeze-dried vials cold, sealed and out of the light; moisture is what degrades a lyophilized cake fastest. After reconstitution, refrigerate the solution and work within the stability window your protocol sets.

Concentration arithmetic: one 50 mg vial dissolved in 2 mL gives 25 mg/mL, or 50 mg/mL in 1 mL. The Research Lab calculator in your dashboard handles any other volume.

Buyer questions

Why do retatrutide listings vary so much in price?

Price per vial reflects fill size, batch testing and brand overheads, so comparing vials directly can mislead. GLP1 Forum Escrow shows price per mg across brands, which makes listings easier to compare. A lower per-mg price only means something if the batch has a recent independent report confirming identity and content, and escrow holds payment until delivery is confirmed.

Where can I read the primary retatrutide data?

The Phase 2 obesity results were published in a major peer-reviewed medical journal, and registrations for the later trial programs are public on ClinicalTrials.gov. Those primary sources describe study populations, endpoints and adverse events in detail, and they are a far better reference than forum summaries or marketing copy.

How much Retatrutide is in this listing?

One vial of 50mg. Where a lab report exists, the testing panel above shows the measured content of the tested sample.

When does Cyprus Peptides get paid?

Only after you confirm delivery. Until then the payment is held in escrow, and you can open a claim if anything is wrong with the order.

Supplied for laboratory research only. Not for human or veterinary use, and not a substitute for any prescription medicine. Nothing on this page is medical advice.