Retatrutide (GLP-3)

Name: Retatrutide (GLP-3)
Brand: ZestyRat Research

Retatrutide (GLP-3)

Triple agonist hitting GIP, GLP-1 and glucagon receptors — the most-studied of the next-generation metabolic compounds. 14mg and 28mg vials.

For research use only · not for human consumption

★★★★★Our #1 rated labVetted supplier

LY3437943

$89.99–$249.99✓ In stock

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Independent research on Retatrutide (GLP-3). Our sister publication Peptides Uncaged maintains a plain-English research guide covering mechanism, the published literature, and how vendors are scored on purity and COA transparency. It is written independently of any lab. How to read a COA is worth ten minutes before your first order.

What Retatrutide (GLP-3) is being studied for

GLP-3 is a novel investigational peptide that functions as a triple agonist, targeting the GLP-1 (glucagon-like peptide-1), GIP (glucose-dependent insulinotropic polypeptide), and glucagon receptors simultaneously. This multi-receptor activity is designed to enhance metabolic regulation by improving insulin sensitivity, reducing appetite, increasing energy expenditure, and promoting weight reduction.

In research settings, GLP-3 has been studied for its ability to deliver greater efficacy in weight management and glycemic control compared to single- or dual-agonist therapies. By engaging three distinct pathways, GLP-3 may provide synergistic benefits for metabolic health, making it a key focus in obesity and type 2 diabetes research.

Potential applications of GLP-3 peptide research include:

Where it is being applied in research

Weight management studies with superior reductions in body fat and appetite suppression
Type 2 diabetes research focused on glycemic control and insulin sensitivity
Metabolic health studies exploring energy expenditure and improved lipid profiles
Cardiovascular risk reduction research through comprehensive metabolic regulation

Summary of published preclinical and clinical literature, provided for research context only. Not a claim of efficacy and not medical advice.

Retatrutide (GLP-3) — FAQ

What is Retatrutide (GLP-3)?

Triple agonist hitting GIP, GLP-1 and glucagon receptors — the most-studied of the next-generation metabolic compounds. 14mg and 28mg vials.

What formats does Retatrutide (GLP-3) come in?

ZestyRat Research supplies Retatrutide (GLP-3) as vial. Available options: 14mg vial at $135; 28mg vial at $190.

Is there a certificate of analysis for Retatrutide (GLP-3)?

Yes. ZestyRat Research is our top-rated research supplier and provides a certificate of analysis on every batch. A COA reports identity by mass spectrometry and purity by HPLC — if you are not sure how to read one, our guide on reading a certificate of analysis walks through it line by line.

While we build, we buy from ZestyRat Research.

Our own line is in development. Until it is finished this site does one job: send you somewhere we would order from ourselves. That is ZestyRat, and it is not a close call — 47 orders have been placed through our links, 30 of them in the last month, and every order that cleared checkout has shipped. Not one has gone missing.

Speed

ZestyRat states orders placed before 3pm ET ship the same day; their shipping policy commits to the next business day. USPS Priority or UPS, 1-3 business days.

Testing

Independently tested, 99%+ purity, per ZestyRat's own published standard.

Tracking

Tracking on every order, in plain packaging with no external labelling. All 50 US states, DC and US territories — they do not ship internationally.

Price

Consistently at or under the market on the compounds researchers buy most.

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Ratings on this page are our own editorial assessment, based on published COA practice, checkout and shipping experience, and price tracking. We earn a commission on orders placed through our links, at no extra cost to you. Research use only.

What Retatrutide (GLP-3) is being studied for

Where it is being applied in research