Lose the fat, keep the muscle

Retatrutide — steady, muscle-sparing fat loss.

Steady fat loss, week over week
Holds onto lean muscle while you lean out
Cravings and appetite under control

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Most requested

$235 $285

10 mg Vial (Lyophilized)

Physician consult & prescription review Free
Bacteriostatic water · 3 ml Free

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Retatrutide 10 mg vial — lyophilised peptide, ≥99% HPLC

What the research says

Retatrutide is a synthetic triple receptor agonist studied for its simultaneous activity at the GLP-1, GIP and glucagon receptors. In published preclinical and clinical literature it is investigated in the context of energy balance, insulin sensitivity and satiety signalling pathways. Supplied as lyophilised powder for reconstitution in a laboratory setting.

Purity: ≥99% HPLC
Presentation: 10 mg Vial (Lyophilized)
Research area: Metabolic research

Made for everyday use

Steady fat loss, week over week
Holds onto lean muscle while you lean out
Cravings and appetite under control
Packaging

Discreet insulated boxes with phase-change coolant. Contents documented as laboratory reference materials.

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Physician-reviewed
≥99% HPLC
Packaging

Also known as: LY3437943, Reta, triple agonist GLP-1/GIP/glucagon

Metabolic research ≥99% HPLC Sizes available: 10 mg Physician-reviewed

Documented research areas

Energy balance
Satiety signalling
Insulin sensitivity

Retatrutide specifications

Retatrutide — supply specification. Supplied after a physician reviews your consultation.
Property	Specification
Classification	Triple GLP-1 / GIP / glucagon receptor agonist
Also known as	LY3437943, Reta, triple agonist GLP-1/GIP/glucagon
Purity	≥99% HPLC
Vial sizes available	10 mg
Intended use	Supplied after physician review — not an approved medicine
Physical form	Lyophilised powder
Storage	-20 °C, protected from light
Reconstitution	Bacteriostatic water · 3 ml, included at no charge (one per vial)
Testing	HPLC + mass spectrometry, per batch
Dispatch	Insulated cold-chain, tracked, from Argentina or the United States

Published lab reports

The third-party analysis behind this compound, published as the laboratory issued it — their letterhead, their report number, their key.

Open the full certificate

Retatrutide

Report #136921

Purity: 99.893%
Content found: 11.96 mg
Laboratory: Janoshik Analytical

Verify at the lab

Checked with this key on Janoshik Analytical's own verification page: BHNAGIAXZZ7U

Open Janoshik Analytical's verification page

Each report covers the batch submitted for it and no other. It is evidence about that material rather than a guarantee about every vial ever shipped, which is why these are dated, numbered and published one at a time instead of summarised into a badge.

Take the certificates with you

Each report as a PDF, the whole page exactly as the laboratory issued it. For a purchasing file, a colleague, or a batch record.

Retatrutide 99.893%

Report #136921 · Janoshik Analytical · PDF

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Certificate of analysis

The CoA for the specific batch you would receive is reviewed during your consultation and ships with the material.

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Frequently asked questions

How do I know a lot is what it claims to be?

From that lot's certificate of analysis, not from what the supplier asserts. The certificate names the laboratory that took the measurement, the date, the task number, the method and the purity found. PeptoClinic publishes the full reports uncropped, exactly as the laboratory printed them.

What is a certificate of analysis and how do you read one?

It is the report an analytical laboratory issues on a specific sample. Four things are worth checking: which compound it claims to have measured, by what method (HPLC for purity, mass spectrometry for identity), what figure it found, and whether the task number can be verified against the laboratory. A certificate with no verifiable task number is a picture.