Category: Metabolic Research

Research Use Only. Tesamorelin is a research peptide for laboratory use only. Not for human consumption.

Buy Tesamorelin 10mg — Research Grade, 99% Purity

Peppy University supplies research-grade Tesamorelin 10mg at 99% purity with HPLC documentation — third-party tested for consistent and reproducible laboratory results.

Tesamorelin Research Background

Tesamorelin is a synthetic analog of Growth Hormone-Releasing Hormone (GHRH) with enhanced plasma stability. It is FDA-approved for HIV-associated lipodystrophy (marketed as Egrifta), making it one of the most well-documented GHRH analogs in the research literature. Laboratory studies have examined its effects on GH secretion, visceral fat reduction, IGF-1 axis activation, and metabolic regulation.

Metabolic Research Stack

Tesamorelin is frequently studied alongside GLP receptor peptides in comprehensive metabolic protocols. The Metabolic Stack combines Tesamorelin 10mg + GLP-3 30mg (Retatrutide) + Reconstitution Solution at $275.

Specifications

• Size: 10mg per vial
• Purity: 99% (HPLC verified)
• Price: $79.00
• Storage: -20°C, protected from light

→ Buy Tesamorelin 10mg at Peppy University

For laboratory research use only. Not for human consumption. Research Use Only.

Research Use Only. Semaglutide is a research peptide for laboratory use only. Not for human consumption or therapeutic application.

Buy Semaglutide for Research — 99% Purity, HPLC Verified

Peppy University supplies research-grade Semaglutide in 5mg and 10mg vials, third-party tested at 99% purity with full HPLC documentation. Available for qualified research applications.

Semaglutide Research Sizes Available

• Semaglutide 5mg — $75 | Standard research size
• Semaglutide 10mg — $110 | Extended research protocols

Semaglutide Research Background

Semaglutide is a GLP-1 receptor agonist (the active compound in Ozempic and Wegovy) that has been extensively studied for insulin secretion, glucagon suppression, gastric motility, and appetite regulation. It is the most well-characterized GLP peptide in the research literature, producing approximately 15-17% mean body weight reduction in clinical trials — making it the gold-standard baseline comparator for GLP research.

GLP Peptide Comparison

Peppy University carries the full GLP peptide research progression:

• Semaglutide (GLP-1 only) — $75 / $110
• Tirzepatide (GLP-1 + GIP) — $110 / $200
• GLP-3 Retatrutide (GLP-1 + GIP + Glucagon) — $70 / $189

Specifications

• Form: Lyophilized powder
• Purity: 99% (HPLC verified)
• Storage: -20°C, protected from light and moisture
• Sizes: 5mg ($75) and 10mg ($110)

→ Buy Semaglutide at Peppy University

For laboratory research use only. Not for human consumption. Research Use Only.

Research Use Only. Tirzepatide is a research peptide for laboratory use only. Not for human consumption or therapeutic application.

Buy Tirzepatide for Research — 99% Purity, HPLC Verified

Peppy University supplies research-grade Tirzepatide in 10mg and 30mg vials, third-party tested at 99% purity with full HPLC documentation. Available without prescription for qualified research applications.

Tirzepatide Research Sizes Available

• Tirzepatide 10mg — $110 | Ideal for dose-response studies and initial research protocols
• Tirzepatide 30mg — $200 | Best value per mg for extended research programs

Why Tirzepatide for Research?

Tirzepatide is a dual GLP-1/GIP receptor agonist developed by Eli Lilly (marketed as Mounjaro/Zepbound). In clinical trials (SURMOUNT-1), it produced approximately 20-22% mean body weight reduction — making it one of the most studied compounds for metabolic research. As a dual agonist targeting both GLP-1 and GIP receptors, it enables research into pathways not accessible with GLP-1-only compounds like semaglutide.

Tirzepatide vs Semaglutide vs GLP-3 (Retatrutide)

• Semaglutide — GLP-1 only (~15% weight reduction in trials)
• Tirzepatide — GLP-1 + GIP dual agonist (~20-22% weight reduction)
• GLP-3 / Retatrutide — GLP-1 + GIP + Glucagon triple agonist (~24.2% weight reduction)

All three are available at Peppy University for comparative metabolic research. See the Metabolic Stack for bundle pricing.

Specifications

• Form: Lyophilized powder
• Purity: 99% (HPLC verified)
• Storage: -20°C, protected from light and moisture
• Sizes: 10mg ($110) and 30mg ($200)

→ Buy Tirzepatide at Peppy University

For laboratory research use only. Not for human consumption. Research Use Only.

Research Use Only. GLP-3 (Retatrutide) is a research peptide intended strictly for qualified laboratory personnel. Not for human consumption or therapeutic application. All preparation should follow institutional biosafety protocols.

Overview

Proper storage and reconstitution of GLP-3 (Retatrutide) is critical for maintaining peptide integrity and ensuring reproducible research outcomes. This guide outlines laboratory best practices for handling lyophilized GLP-3, consistent with standard research peptide protocols.

Storage of Lyophilized GLP-3

GLP-3 is supplied in lyophilized (freeze-dried) powder form. Proper storage conditions are essential to preserve structural integrity:

• Long-term storage: -20°C in a dry, dark environment
• Short-term storage (under 4 weeks): 2-8°C refrigeration is acceptable
• Protect from: Light, moisture, and repeated temperature fluctuations
• Shelf life: Lyophilized peptides stored at -20°C remain stable for 24+ months when properly sealed
• Do not: Store at room temperature for extended periods or expose to direct sunlight

Reconstitution Protocol

GLP-3 requires reconstitution with a suitable laboratory-grade diluent prior to research use. Standard protocol:

• Recommended diluent: Bacteriostatic water (0.9% benzyl alcohol) for multi-use vials, or sterile saline for single-use applications
• Reconstitution method: Add diluent slowly along the interior wall of the vial — do not inject directly onto the lyophilized powder
• Mixing: Gently swirl to dissolve — do not shake or vortex, as mechanical agitation can denature the peptide structure
• Reconstituted storage: 2-8°C, use within 28-30 days
• Freeze-thaw cycles: Avoid repeated freezing of reconstituted solution — aliquot into single-use volumes before freezing if extended storage is needed

Laboratory Handling Precautions

• Handle in a sterile environment — laminar flow hood or biosafety cabinet recommended
• Use sterile, single-use syringes and needles for all transfers
• Label vials with date of reconstitution and lot number for traceability
• Document all handling procedures per institutional research protocols
• Dispose of peptide materials according to your institution’s biohazard waste procedures

Quality Verification

All GLP-3 (Retatrutide) supplied by Peppy University is:

• Third-party tested via HPLC for purity verification (99%+)
• Supplied with Certificate of Analysis documentation
• Lyophilized using standard pharmaceutical-grade freeze-drying processes
• Lot-tracked for research traceability and compliance documentation

Sourcing GLP-3 for Your Lab

Peppy University supplies research-grade GLP-3 (Retatrutide) in two sizes for different research applications:

• GLP-3 10mg — suitable for initial dose-response studies and smaller research protocols
• GLP-3 30mg — best value for extended research protocols requiring higher total peptide volume

Both available with 99% purity, HPLC verified COA, and same-day processing with 2-3 day delivery.

All products at Peppy University are intended strictly for laboratory and scientific research purposes only. Not for human consumption. Research Use Only.

Research Use Only. All compounds discussed are intended strictly for laboratory and scientific research. Not for human consumption or therapeutic application.

Overview: The GLP Peptide Landscape in 2026

The GLP receptor agonist family has become one of the most studied areas in metabolic research. Three generations of compounds now exist for laboratory investigation — each targeting a different combination of metabolic receptors. Understanding the mechanistic differences between Semaglutide, Tirzepatide, and GLP-3 (Retatrutide) is essential for designing effective preclinical research protocols.

Receptor Targeting: The Core Difference

The fundamental distinction between these three compounds is which receptors they activate:

• Semaglutide — GLP-1 receptor agonist only (single agonist)
• Tirzepatide — GLP-1 + GIP dual receptor agonist
• GLP-3 / Retatrutide — GLP-1 + GIP + Glucagon triple receptor agonist

Each additional receptor target introduces a new metabolic pathway into the research model, which is why the compounds show progressively different outcomes in preclinical and clinical studies.

Semaglutide in Research

Semaglutide is a GLP-1 receptor agonist that has been studied extensively for its effects on insulin secretion, glucagon suppression, gastric emptying, and appetite regulation. In clinical trials, semaglutide has demonstrated approximately 15-17% mean body weight reduction at maximum doses. It remains the most well-characterized GLP peptide in the research literature, making it a strong baseline comparator for newer compounds.

Key research applications: GLP-1 receptor pharmacology, insulin secretion models, appetite signaling, gastric motility studies.

Available at Peppy University: Semaglutide 5mg and 10mg

Tirzepatide in Research

Tirzepatide adds GIP receptor agonism to the GLP-1 framework. The GIP receptor component contributes enhanced insulin response and adipose tissue signaling that GLP-1 alone does not produce. Clinical trials showed approximately 20-22% mean body weight reduction — meaningfully higher than semaglutide — attributed in part to the complementary GIP pathway.

Key research applications: Dual receptor agonism studies, comparative GLP-1 vs GIP pathway investigation, insulin sensitivity models, adipose tissue metabolism research.

Available at Peppy University: Tirzepatide 10mg and 30mg

GLP-3 (Retatrutide) in Research

GLP-3 — Peppy University’s research designation for Retatrutide — adds the glucagon receptor as the third target. The glucagon receptor component increases energy expenditure and drives hepatic fat oxidation, mechanisms not activated by either semaglutide or tirzepatide. Phase 2 JAMA data showed approximately 24.2% mean body weight reduction at 48 weeks on the highest studied dose, with no plateau observed through the full study duration.

Key research applications: Triple receptor agonism studies, hepatic fat oxidation models, energy expenditure research, comparative single vs dual vs triple agonist protocols.

Available at Peppy University: GLP-3 10mg and GLP-3 30mg

Side-by-Side Research Comparison

Compound	Receptors Targeted	Phase 2/3 Weight Reduction	Unique Research Value
Semaglutide	GLP-1	~15-17%	Most characterized baseline; GLP-1 pharmacology gold standard
Tirzepatide	GLP-1 + GIP	~20-22%	GIP pathway contribution; dual agonist comparative studies
GLP-3 (Retatrutide)	GLP-1 + GIP + Glucagon	~24.2%	Glucagon receptor addition; hepatic fat; energy expenditure models

Which Compound for Your Research Protocol?

The choice depends on your research endpoints:

• GLP-1 receptor pharmacology → Semaglutide is the established reference compound
• Dual agonist or GIP pathway studies → Tirzepatide adds the GIP variable
• Triple agonism, glucagon pathway, or maximum metabolic effect studies → GLP-3 (Retatrutide) targets all three receptors
• Comparative studies across all three generations → Peppy University carries all three compounds for side-by-side protocol design

All compounds are available individually or as part of the Metabolic Stack at Peppy University.

All products at Peppy University are intended strictly for laboratory and scientific research purposes only. Not for human consumption. Research Use Only. Information presented references published peer-reviewed literature and is not medical advice.

Research Use Only. GLP-3 (Retatrutide) is a research peptide intended strictly for laboratory and scientific use. Not approved for human consumption or therapeutic application.

What is GLP-3 (Retatrutide)?

GLP-3, sold at Peppy University under its research designation, is the compound widely known in clinical research as Retatrutide — a next-generation triple agonist peptide developed by Eli Lilly currently in Phase 3 TRIUMPH trials as of 2026. Unlike semaglutide (GLP-1 only) and tirzepatide (GLP-1 + GIP dual agonist), GLP-3 simultaneously targets three metabolic receptors: GLP-1, GIP, and glucagon — making it the most advanced GLP peptide studied to date for metabolic research.

Phase 2 trial data published in JAMA showed Retatrutide produced a mean body weight reduction of 24.2% at 48 weeks at the 12mg dose — surpassing both semaglutide (~15%) and tirzepatide (~20-22%) in head-to-head metabolic endpoints. Continuous weight loss through 48 weeks was observed with no plateau, a result that has driven significant interest in the research community.

GLP-3 vs Semaglutide vs Tirzepatide

Understanding where GLP-3 (Retatrutide) sits in the GLP peptide landscape is essential for research protocol design:

• Semaglutide (GLP-1 agonist) — targets GLP-1 receptor only. Drives insulin secretion, appetite suppression, and gastric motility. ~15-17% average weight reduction in trials.
• Tirzepatide (GLP-1/GIP dual agonist) — targets GLP-1 + GIP receptors. Enhanced insulin response and adipose tissue signaling. ~20-22% average weight reduction in trials.
• GLP-3 / Retatrutide (GLP-1/GIP/Glucagon triple agonist) — targets all three receptors. Adds glucagon receptor activation which increases energy expenditure and drives hepatic fat oxidation. ~24.2% average weight reduction in Phase 2 trials.

GLP-3 (Retatrutide) in Preclinical & Clinical Research

• Triple receptor agonism — Retatrutide simultaneously activates GLP-1, GIP, and glucagon receptors, offering a uniquely broad metabolic signaling profile for laboratory investigation.
• Body composition studies — Phase 2 data showed continuous, unplateaued weight loss through 48 weeks, with dose-dependent responses across 0.5mg, 4mg, 8mg, and 12mg weekly protocols.
• Hepatic fat reduction — The glucagon component drives hepatic fat oxidation pathways not activated by GLP-1 or GIP alone, relevant to NAFLD and metabolic liver disease research models.
• Glucose and insulin regulation — Research has documented Retatrutide’s effects on fasting glucose, postprandial glucose, HbA1c, and insulin sensitivity in metabolic dysfunction models.
• Cardiovascular pathways — Emerging research examines GLP-1/GIP/glucagon receptor expression in cardiac tissue and potential cardioprotective signaling mechanisms.
• Lean mass preservation — Early data on lean mass preservation during weight loss protocols has generated significant interest compared to GLP-1-only compounds.

Why GLP-3 Over Semaglutide or Tirzepatide for Research?

For researchers designing metabolic studies in 2026, GLP-3 (Retatrutide) offers several research advantages over single or dual agonists:

• Enables investigation of glucagon receptor contributions to metabolic outcomes — a pathway not accessible with semaglutide or tirzepatide protocols alone
• Allows study of triple vs dual vs single agonist comparative endpoints within the same research framework
• More aggressive metabolic effects provide cleaner signal differentiation in body composition and glucose metabolism models
• As an investigational compound not yet FDA-approved, GLP-3 remains available for research-grade laboratory procurement without the supply constraints affecting compounded semaglutide and tirzepatide

Molecular Profile

• Mechanism: GLP-1/GIP/Glucagon triple receptor agonist
• Form: Lyophilized powder
• Purity: 99% (HPLC verified)
• Storage: -20°C, protected from light and moisture
• Reconstitution: Bacteriostatic water or sterile saline

Sourcing GLP-3 (Retatrutide) for Research

Peppy University supplies GLP-3 in two research sizes:

• GLP-3 10mg — ideal for initial protocol testing and dose-response studies
• GLP-3 30mg — best value for extended research protocols

Both available with 99% purity, HPLC verified, and full research documentation. Also available as part of the Metabolic Stack combined with Tesamorelin 10mg and Reconstitution Solution.

All products at Peppy University are intended strictly for laboratory and scientific research purposes only. Not for human consumption. Research Use Only.

Research Use Only. Semaglutide is a research peptide intended strictly for laboratory and scientific use. Not approved for human consumption or therapeutic application outside of authorized clinical settings.

What is Semaglutide?

Semaglutide is a GLP-1 receptor agonist — a synthetic analog of the naturally occurring glucagon-like peptide-1 hormone. In preclinical and clinical research, it has been studied for its effects on insulin secretion, glucagon suppression, gastric motility, and appetite regulation pathways. It is one of the most studied peptides in the metabolic research space.

Semaglutide in Preclinical Research

• GLP-1 receptor binding — Semaglutide binds GLP-1 receptors with high affinity, stimulating insulin secretion in a glucose-dependent manner. Its extended half-life makes it a preferred research analog for sustained GLP-1 pathway studies.
• Appetite and energy regulation — Preclinical models have examined Semaglutide’s effects on hypothalamic appetite centers and energy homeostasis pathways.
• Glucose metabolism — Research has extensively documented Semaglutide’s effects on fasting and postprandial glucose levels in rodent and primate models.
• Cardiovascular research — Studies have explored GLP-1 receptor signaling in cardiac tissue and its potential cardioprotective effects in metabolic dysfunction models.
• Neurological pathways — Emerging research is investigating GLP-1 receptor expression in the central nervous system and potential neuroprotective mechanisms.

Molecular Profile

• Molecular Weight: 4113.58 g/mol (5mg) / 4113.58 g/mol (10mg)
• Form: Lyophilized powder
• Purity: 99% (HPLC verified)
• Storage: -20°C, protect from light and moisture

Sourcing Semaglutide for Research

Peppy University supplies Semaglutide in two research sizes — Semaglutide 5mg and Semaglutide 10mg — with 99% purity and full HPLC documentation for reproducible laboratory results.

All products at Peppy University are intended strictly for laboratory and scientific research purposes only. Not for human consumption. Research Use Only.

Research Use Only. Tesamorelin is a research peptide intended strictly for laboratory and scientific use. Not for human consumption or therapeutic application.

What is Tesamorelin?

Tesamorelin is a synthetic analog of Growth Hormone-Releasing Hormone (GHRH) consisting of the full 44-amino-acid sequence with a trans-3-hexenoic acid modification that enhances stability. In preclinical and clinical research, it has been studied extensively for its role in growth hormone secretion, visceral fat reduction, and metabolic regulation.

Tesamorelin in Research

• GH secretion pathways — Tesamorelin binds to GHRH receptors in the pituitary gland, stimulating pulsatile growth hormone release. Research examines its dose-response characteristics and downstream IGF-1 effects.
• Visceral adiposity studies — Clinical and preclinical models have studied Tesamorelin’s effects on visceral fat accumulation, particularly in metabolic dysfunction models.
• Metabolic regulation — Research has explored Tesamorelin’s effects on lipid metabolism, insulin sensitivity, and body composition parameters.
• Cognitive research — Emerging studies have investigated GH/IGF-1 axis activation via Tesamorelin in the context of cognitive function and brain metabolism in aging models.

Molecular Profile

• Molecular Formula: C₂₂₁H₃₆₆N₇₂O₆₇S
• Molecular Weight: 5135.77 g/mol
• Form: Lyophilized powder
• Purity: 99% (HPLC verified)
• Storage: -20°C, protected from light

Tesamorelin Research Stack

Tesamorelin is frequently studied alongside GLP receptor peptides in metabolic research. The Metabolic Stack at Peppy University combines Tesamorelin 10mg and GLP-3 30mg with Reconstitution Solution.

Shop Tesamorelin 10mg at Peppy University — 99% purity, HPLC verified, fast shipping.

All products at Peppy University are intended strictly for laboratory and scientific research purposes only. Not for human consumption. Research Use Only.