An advanced triple-agonist peptide for researching synergistic effects on GLP-1, GIP, and glucagon receptors. Designed for cutting-edge studies on metabolic rate, fat oxidation, and energy balance.
Retatrutide is an advanced peptide under investigation for its unique triple receptor activity. It is used in research examining appetite control, metabolic rate, glucose homeostasis, and fat utilization. Because it activates GLP-1, GIP, and glucagon receptors, it enables scientists to study combined pathways that influence overall energy balance in complex biological models.
Retatrutide stimulates three key receptor systems — GLP-1, GIP, and glucagon (GCGR) receptors — that collectively regulate metabolic activity. This triple-agonist model allows exploration of synergy across pathways that affect satiety, energy output, and glucose turnover. The activation of the glucagon receptor specifically allows researchers to study increased energy expenditure and lipid metabolism alongside traditional incretin pathways.
Specification
Property
Details
CAS Number
2381089-83-2
Chemical Name
Retatrutide
Peptide Type
Triple Receptor Agonist (GLP-1, GIP, GCGR)
Sequence (1-letter)
Proprietary sequence — available via COA
Molecular Formula
C221H342N60O71
Molecular Weight
~4731.3 g/mol
Physical Appearance
White to off-white lyophilized powder
Purity
≥99\% (verified by HPLC)
Verification Method
HPLC & Mass Spectrometry
Container
Sterile glass vial (lyophilized content)
Solubility
Soluble in sterile water or laboratory buffers
Storage Conditions
Store at −20 °C; protect from light and moisture
Intended Use
Laboratory research use only (RUO)
COA Availability
Certificate of Analysis provided per batch
Potential Research Applications
Retatrutide offers researchers an expanded view of metabolic coordination, combining incretin and glucagon pathway science in a single molecule. It is commonly used in experimental models testing energy expenditure, appetite suppression, and fat oxidation.
Triple-Pathway Synergistic Effects
Research focuses on the simultaneous activation of GLP-1, GIP, and GCGR to understand how these combined signals influence metabolic efficiency more deeply than mono- or dual-agonists.
Glucagon-Mediated Energy Expenditure
By engaging the glucagon receptor, Retatrutide serves as a model for studying thermogenesis and the mobilization of fatty acids as a primary energy source.
Insulin Sensitivity and Glucose Homeostasis
The GIP and GLP-1 components allow for detailed analysis of pancreatic signaling and peripheral insulin sensitivity in metabolic research models.
Lipid Metabolism and Adipose Research
Investigators use Retatrutide to explore the pathways of fat oxidation and the regulation of lipid storage at a cellular level.
FAQ
What makes Retatrutide different from Tirzepatide?
While Tirzepatide is a dual agonist (GLP-1 and GIP), Retatrutide is a triple agonist. It adds the activation of the glucagon receptor, which allows researchers to study increased energy expenditure and lipid metabolism in addition to glucose regulation and satiety.
Who is eligible to purchase Retatrutide?
Retatrutide is available to qualified purchasers conducting laboratory or research-based work. By purchasing, buyers confirm they are experienced in handling research-use-only (RUO) materials and will adhere to all applicable safety and regulatory protocols.
What is the purity of Sunday Health Retatrutide?
Each batch is verified to have a purity of ≥99\% through High-Performance Liquid Chromatography (HPLC) and mass spectrometry. We provide a Certificate of Analysis (COA) to ensure traceability and reproducibility in your research.
How should Retatrutide be stored and handled?
Retatrutide is supplied as a lyophilized powder and must be stored at –20°C (–4°F) in a dry, light-protected environment to ensure long-term stability. Once reconstituted for research, the solution should be stored in the fridge at 36°F to 46°F.
Why does the vial appear nearly empty?
Peptides are supplied by mass, not volume. Even at higher dosages like 50mg, the lyophilized powder occupies very little space. The “cake” or powder at the bottom is the exact mass indicated on the label.
Is documentation provided with each order?
Yes. Every order of Retatrutide includes access to a lot-specific Certificate of Analysis (COA) confirming purity and identity verification. This documentation is essential for maintaining batch traceability in research protocols.
Can Retatrutide be used in combination studies?
In research environments, Retatrutide is often evaluated for its unique triple-agonist activity. It may be studied alongside other metabolic markers or compounds as part of a controlled experimental design. All combination research should be conducted under standard laboratory conditions.
What shipping methods are used?
We use validated shipping methods designed to protect the integrity of the peptides during transit. Orders placed before the daily cutoff typically ship the same business day, with tracking provided for every shipment.
Can I request BAC water with my order?
At this time, BAC water is not bundled with Retatrutide unless offered as a separate, clearly labeled product. Please refer to individual product listings or contact support for current availability.
Clinically Proven
SCIENCE-BACKED
COMMUNITY LOVED
EXPERT APPROVED
TESTED
SCIENCE-BACKED
COMMUNITY LOVED
EXPERT APPROVED
TESTED
Why Choose Sunday
Every product we ship is engineered to remove variables and let your data speak for itself.
✧
Prep
Flip the cap, swab the septum with 70 % IPA.
✧
Draw
Use a sterile syringe to withdraw the volume needed for peptide reconstitution
✦
Inject
Transfer the water into your peptide vial; swirl until dissolved.
✧
Inject
Research peptides in a clean airlight vial in the fridge at around 36 to 46 degrees Fahreheit.
“Reliable solvents are the backbone of reliable science.”
Frequently Asked Questions
✧ 1. What are Sunday Health peptides used for?
All Sunday Health products are sold for research use only. They are not intended for humanconsumption, therapeutic, or diagnostic use. Our peptides are designed exclusively for controlled laboratory research, educational studies, or analytical testing. Every product label and supporting document clearly reflects this compliance standard.
✦ 2. Who is eligible to purchase peptides?
Purchases are available to verified professionals, licensed clinics, educational institutions, and qualified research entities. Individuals may also purchase peptides for legitimate research or educational purposes, but all buyers must acknowledge and agree to Sunday Health’s research-only terms prior to completing any order. We do not sell or endorse products for personal or medical use under any circumstance
♡ 3. How should peptides be handled and stored?
Peptides arrive as a lyophilized (freeze-dried) powder. For laboratory reconstitution, use only sterile bacteriostatic water or sterile saline (0.9 percent NaCl). Gently introduce the solvent and swirl—do not shake. Once reconstituted, store at 35°F to 45°F for short-term use, or at –4°F for long-term preservation. Protect vials from light and moisture, and avoid repeated freeze and thaw cycles to maintain stability.
⟡ 4. Why do peptide vials appear nearly empty?
Because peptides are measured in milligrams, the quantity often appears minimal or as a thin layer within the vial. This is completely normal for high-purity research peptides. Each vial undergoes precision weighing and purity testing using high-performance liquid chromatography (HPLC) and mass spectrometry to ensure the correct labeled amount is present.
✧ 5. What documentation and quality assurances come with each product?
Every peptide includes a Certificate of Analysis (COA) verifying its identity, purity (≥ 99 percent), and composition. Each batch is U.S. sourced and assembled under strict quality oversight and internal auditing. Full lot traceability, validated purity testing, and documentation accompany every shipment to ensure reproducibility, compliance, and scientific reliability.
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Retatrutide
An advanced triple-agonist peptide for researching synergistic effects on GLP-1, GIP, and glucagon receptors. Designed for cutting-edge studies on metabolic rate, fat oxidation, and energy balance.
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Retatrutide is an advanced peptide under investigation for its unique triple receptor activity. It is used in research examining appetite control, metabolic rate, glucose homeostasis, and fat utilization. Because it activates GLP-1, GIP, and glucagon receptors, it enables scientists to study combined pathways that influence overall energy balance in complex biological models.
Retatrutide stimulates three key receptor systems — GLP-1, GIP, and glucagon (GCGR) receptors — that collectively regulate metabolic activity. This triple-agonist model allows exploration of synergy across pathways that affect satiety, energy output, and glucose turnover. The activation of the glucagon receptor specifically allows researchers to study increased energy expenditure and lipid metabolism alongside traditional incretin pathways.
Retatrutide offers researchers an expanded view of metabolic coordination, combining incretin and glucagon pathway science in a single molecule. It is commonly used in experimental models testing energy expenditure, appetite suppression, and fat oxidation.
Research focuses on the simultaneous activation of GLP-1, GIP, and GCGR to understand how these combined signals influence metabolic efficiency more deeply than mono- or dual-agonists.
By engaging the glucagon receptor, Retatrutide serves as a model for studying thermogenesis and the mobilization of fatty acids as a primary energy source.
The GIP and GLP-1 components allow for detailed analysis of pancreatic signaling and peripheral insulin sensitivity in metabolic research models.
Investigators use Retatrutide to explore the pathways of fat oxidation and the regulation of lipid storage at a cellular level.
Clinically Proven
Why Choose Sunday
Every product we ship is engineered to remove variables and let your data speak for itself.
✧
Prep
✧
Draw
Use a sterile syringe to withdraw the volume needed for peptide reconstitution
✦
Inject
Transfer the water into your peptide vial; swirl until dissolved.
✧
Inject
Research peptides in a clean airlight vial in the fridge at around 36 to 46 degrees Fahreheit.
“Reliable solvents are the backbone of reliable science.”
Frequently Asked Questions
All Sunday Health products are sold for research use only. They are not intended for human consumption, therapeutic, or diagnostic use. Our peptides are designed exclusively for controlled laboratory research, educational studies, or analytical testing. Every product label and supporting document clearly reflects this compliance standard.
Purchases are available to verified professionals, licensed clinics, educational institutions, and qualified research entities. Individuals may also purchase peptides for legitimate research or educational purposes, but all buyers must acknowledge and agree to Sunday Health’s research-only terms prior to completing any order. We do not sell or endorse products for personal or medical use under any circumstance
Peptides arrive as a lyophilized (freeze-dried) powder. For laboratory reconstitution, use only sterile bacteriostatic water or sterile saline (0.9 percent NaCl). Gently introduce the solvent and swirl—do not shake. Once reconstituted, store at 35°F to 45°F for short-term use, or at –4°F for long-term preservation. Protect vials from light and moisture, and avoid repeated freeze and thaw cycles to maintain stability.
Because peptides are measured in milligrams, the quantity often appears minimal or as a thin layer within the vial. This is completely normal for high-purity research peptides. Each vial undergoes precision weighing and purity testing using high-performance liquid chromatography (HPLC) and mass spectrometry to ensure the correct labeled amount is present.
Every peptide includes a Certificate of Analysis (COA) verifying its identity, purity (≥ 99 percent), and composition. Each batch is U.S. sourced and assembled under strict quality oversight and internal auditing. Full lot traceability, validated purity testing, and documentation accompany every shipment to ensure reproducibility, compliance, and scientific reliability.