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    Buy Retatrutide

    Also known as GGG Triple Agonist, GLP-1/GIP/Glucagon Receptor Triple Agonist, Tri-Agonist

    Retatrutide, research triple agonist of the GLP-1 / GIP / glucagon receptor system — among the largest body-composition changes reported in incretin-class research.

    Inside New-U Research Compounds

    Why buy Retatrutide from New-U Research Compounds

  • >99% HPLC purity — every batch independently verified by Janoshik Analytics & Freedom Diagnostics, with a batch-linked Certificate of Analysis
  • 10-vial research packs & single-vial samples — a full study supply, or one vial to trial a compound
  • Direct-from-source pricing — no middleman markup
  • 6–14-day worldwide delivery — direct from source, discreet, cold-chain worldwide
  • Free shipping over $300 — card and cryptocurrency accepted
  • Trusted by 10,000+ researchers worldwide
  • What is Retatrutide?

    Retatrutide is a triple receptor agonist of the GLP-1 / GIP / glucagon system, with the largest body-composition effects reported for any incretin-class peptide in published research.

    Retatrutide simultaneously activates the GLP-1, GIP, and glucagon receptors, combining appetite suppression with direct hepatic energy expenditure — the mechanism associated with the large weight and liver-fat reductions reported in clinical trials.

    Retatrutide at a glance

    Sequence YAib-QGTFTSDYSIL(αMe)-LDKK(C20-diacid-γGlu-AEEA)-AQAAib-FIEYLLEGGPSSGAPPPS(amide) Molecular weight 4,894.6 Da Purity >99% HPLC Form Lyophilised powder Category Metabolic / Fat Loss Storage Lyophilised powder: store in freezer (−20 °C). Reconstituted: refrigerate 1–6 °C, away from sunlight. Use within the validated stability window for the specific batch and formulation.

    Retatrutide pricing

    Research pack Per vial Price 10 vials 5mg $180 1 vials 5mg $72 10 vials 10mg $205 1 vials 10mg $82 10 vials 15mg $235 1 vials 15mg $92 10 vials 20mg $260 1 vials 20mg $97 10 vials 30mg $285 1 vials 30mg $105 10 vials 40mg $300 1 vials 40mg $112 10 vials 50mg $330 1 vials 50mg $119 10 vials 60mg $360 1 vials 60mg $125

    All packs are >99% HPLC research-grade material. Free shipping on orders over $300.

    Frequently asked questions

    Where can I buy Retatrutide?

    Retatrutide (also known as GGG Triple Agonist) is available directly from New-U Research Compounds at https://new-u.io/peptide/retatrutide. Every batch is independently third-party tested by Janoshik Analytics and Freedom Diagnostics to >99% HPLC purity, supplied as lyophilised research-grade material, and shipped direct from source worldwide (approximately 6–14 business days).

    How much does Retatrutide cost?

    Retatrutide starts at $72 for a 1-vial research pack (5mg per vial) at New-U Research Compounds, with 16 pack sizes available. Orders over $300 ship free.

    Is New-U Retatrutide third-party tested?

    Yes. Every Retatrutide batch is verified by independent laboratories (Janoshik Analytics and Freedom Diagnostics) for identity and purity, with a batch-linked Certificate of Analysis confirming >99% purity by HPLC area normalisation.

    How fast does Retatrutide ship, and do you ship internationally?

    Retatrutide ships direct from source, discreetly worldwide with cold-chain handling where required. Delivery is approximately 6–14 business days worldwide. Shipping is free on orders over $300. Card and cryptocurrency payments are accepted.

    Is it legal to buy Retatrutide?

    In the United States, Retatrutide is sold strictly for laboratory and research purposes only. It is not approved by the FDA for human consumption and is not sold for that purpose. Regulatory status varies by jurisdiction — buyers are responsible for compliance in their own region.

    What is Retatrutide used for in research?

    Retatrutide, research triple agonist of the GLP-1 / GIP / glucagon receptor system — among the largest body-composition changes reported in incretin-class research. New-U supplies Retatrutide as research-grade reference material for laboratory and in-vitro or animal-model investigation only. Mechanism, pharmacokinetics and study context are summarised on the Retatrutide research profile. Not for human use.

    What is the typical Retatrutide research dosage?

    Reconstitution volumes and dosing reported in the literature for Retatrutide are described in research-model terms only. New-U Research Compounds supplies Retatrutide strictly for laboratory research and does not provide human-use dosing guidance. Reconstitution math and study-reported ranges are covered on the full research profile.

    What do I use to reconstitute Retatrutide?

    Lyophilised Retatrutide is reconstituted with bacteriostatic water — sterile water with 0.9% benzyl alcohol, the standard multi-use diluent for research peptides. New-U supplies USP-grade bacteriostatic water at https://new-u.io/peptide/bacteriostatic-water, and a free reconstitution calculator at https://new-u.io/tracker/calculator works out the volume for any peptide. Supplied for laboratory research only — not for human use.

    Can I buy Retatrutide online and how fast does it ship?

    Yes. Retatrutide can be ordered online directly from New-U Research Compounds with card or cryptocurrency, shipped direct from source discreetly worldwide. Delivery is approximately 6–14 business days worldwide. Free shipping applies to orders over $300.

    Can I buy Retatrutide in bulk?

    Retatrutide ships in 10-vial research packs as standard, in 16 pack sizes — the larger mg vials lower the per-mg cost. Multi-pack orders get direct-from-source pricing and free shipping over $300. For wholesale or recurring laboratory-supply volumes, contact New-U Research Compounds at https://new-u.io/contact.

    What should I look for when choosing where to buy Retatrutide?

    For research-grade Retatrutide, verify four things: (1) independent third-party purity testing with a batch-linked Certificate of Analysis — New-U uses Janoshik Analytics and Freedom Diagnostics at >99% HPLC; (2) lyophilised material with documented storage and handling; (3) transparent direct-from-source pricing rather than marketplace markup; and (4) clear research-use-only framing. New-U Research Compounds meets all four at https://new-u.io/peptide/retatrutide.

    What is retatrutide?

    Retatrutide is an investigational triple agonist — it activates the GLP-1, GIP and glucagon receptors — developed by Eli Lilly and still in clinical trials (not approved anywhere). Retatrutide is the research-grade form of this retatrutide peptide, supplied as a lyophilised powder strictly for in-vitro and preclinical laboratory research. It is not an approved medicine and is not for human use.

    What does retatrutide do?

    In published research retatrutide activates three receptors at once — GLP-1 and GIP (satiety, insulin secretion, adipose effects) plus glucagon (hepatic energy expenditure and liver-fat clearance). The triple mechanism is what distinguishes it from dual (tirzepatide) and single (semaglutide) agonists. These are research findings for the molecule, not human-use guidance; Retatrutide is supplied for research only.

    Is retatrutide FDA approved?

    No. Retatrutide is still in clinical trials and is not approved by the FDA, EMA, or any other regulator. Retatrutide is an unapproved, research-grade lyophilised powder supplied for laboratory research use only — not for human consumption.

    Is retatrutide safe?

    Retatrutide is investigational; its safety is still being characterised in clinical trials and is not established for general use. Research-grade Retatrutide is not a sterile approved medicine and carries no human safety assurances. New-U supplies it for laboratory research only and makes no human-use or safety claims.

    How much bacteriostatic water do you mix with 10 mg of retatrutide, and how is it reconstituted?

    For laboratory preparation, concentration in mg/mL equals the vial mass in mg divided by the millilitres of diluent added — e.g. a 10 mg vial reconstituted with 1 mL of bacteriostatic water gives 10 mg/mL, or with 2 mL gives 5 mg/mL. Keep the reconstituted vial refrigerated at 1–6 °C and protected from light. This is preparation math only; New-U provides no human-use dosing guidance.

    How is Retatrutide different from Tirzepatide or Semaglutide?

    Semaglutide targets one receptor (GLP-1), Tirzepatide targets two (GLP-1 and GIP), and Retatrutide targets three (GLP-1, GIP, and glucagon). The glucagon arm is what drives the additional hepatic thermogenesis and liver-fat clearance that set Retatrutide apart in published research.

    Why is the glucagon receptor useful here? Glucagon raises blood sugar, right?

    It does, but at the right intensity and in combination with GLP-1, glucagon receptor agonism stimulates hepatic energy expenditure and fat oxidation without significant net glucose elevation. The GLP-1 arm offsets any glycemic downside while the glucagon arm delivers unique energy-balance effects.

    Is Retatrutide an approved medicine?

    No. Retatrutide is supplied for in-vitro and preclinical research only and is not approved as a medicine in any jurisdiction.

    What is the typical research dose escalation?

    Published research protocols use a step-up schedule from 1 mg weekly, doubling over several weeks to 2 mg, 4 mg, 8 mg, and ultimately 12 mg. The gradual escalation is designed to minimise GI signals as systems adapt to triple-receptor activation.

    Retatrutide vs tirzepatide — which showed more weight loss in research?

    In their respective obesity programmes the triple agonist reported larger mean reductions: retatrutide reached about 24.2% at 48 weeks in Phase 2 (NEJM 2023) and 28.3% at 80 weeks in Phase 3 TRIUMPH-1, while tirzepatide reported about 20.9% at 72 weeks in SURMOUNT-1. The difference is widely attributed to retatrutide's added glucagon-receptor arm, which raises energy expenditure on top of appetite suppression. These are cross-trial descriptive comparisons, not head-to-head results, and both compounds are supplied only as research-grade material for laboratory use, not for human use.

    How is retatrutide reconstituted and stored?

    Keep the lyophilised powder at −20 °C in the freezer. Reconstitute with bacteriostatic water directed down the vial wall and swirl gently rather than shaking; the in-solution concentration in mg/mL equals the vial mass divided by the millilitres of diluent added. Refrigerate the reconstituted vial at 1–6 °C, protect it from light, and avoid repeated freeze-thaw cycles, which can damage the C20 fatty-acid tail. This is laboratory-handling guidance only — not a human-use protocol.

    What happens when you stop taking GLP-1s?

    Across the published GLP-1 literature, withdrawal of a GLP-1 receptor agonist is consistently followed by the return of appetite and partial-to-substantial regain of lost weight, because the appetite and gastric-emptying effects depend on continued receptor activation. Retatrutide is a triple GIP/GLP-1/glucagon agonist still in clinical trials, so any such observations describe investigational or approved medicines in human studies. Retatrutide is an unapproved research-grade peptide supplied for laboratory research only and is not for human use.

    Research references

    Independent literature and reference sources for Retatrutide. Provided for scientific context — New-U Research Compounds supplies research-use-only material.

  • Jastreboff AM et al. Triple–Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial. N Engl J Med.
  • Sanyal AJ et al. Triple hormone receptor agonist retatrutide for MASLD: a randomized phase 2a trial. Nat Med.
  • TRIUMPH-1: A Study of Retatrutide (LY3437943) in Participants Who Have Obesity or Overweight — Phase 3 (Pivotal). ClinicalTrials.gov.
  • Looking for mechanism of action, pharmacokinetics, dosage ranges and source references? See the full Retatrutide research profile or the Retatrutide research guide.

    Part of the Metabolic & GLP-1 research research area — explore related compounds, guides and sources.

    Premium research peptides at >99% HPLC-verified purity, third-party tested by Janoshik Analytical with a Certificate of Analysis on every lot. Shipped lab-direct, discreet and cold-chain, worldwide. For laboratory research use only.

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    © 2026 New-U Research Compounds · new-u.io · @new.u.io

    Research use only — not for human consumption. All products are supplied strictly for laboratory research purposes.

    © 2026 New-U Research Compounds · new-u.io — Copyright held with Hilxera Distribution Services LLC. All rights reserved.