2,400+ researchers trust Kore
R3ta = Game Changer
The Triple-Agonist Protocol
The scale starts free-falling. Your appetite dies. You don't just lose weight — you carve a new body. Third-party tested. 99%+ purity verified.
99%+ Purity
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How It Feels
"How Does It Actually Feel
to Be on R3ta?"
Pretty amazing. Here's what researchers report week after week:
Your Appetite Dies. Food sits in front of you and you don't even care. Cravings vanish. Portions shrink. No more late-night snacking.
The Scale Starts Free-Falling. Weight slides off like it's nothing. Down 40+ lbs in less than two months — that's what researchers are reporting.
No Food Noise. Eat What You Want. Your calorie intake drops naturally because you can't finish your meals. You eat what you want and still stay shredded.
Energy Is Steady. No Crashes. You train lighter on food but you're sharper in the mirror. Every cardio session feels twice as effective.
The Mirror Catches Up. Face tighter. Waist pulling in. Veins start crawling through. You don't just look like you're dieting — you look like you've been locked in for months.
It Strips You. Fast. Clean. Surgical. R3ta doesn't bulk you — it carves a new body. Pin it week after week and you don't just count weight, you recompose.
Real Results
"I Changed Nothing Else.
Just Upped My R3ta."
Results reported by independent researchers. Individual outcomes may vary.
"You don't just lose weight — you carve a new body."
What to Expect
Your R3ta Protocol,
Week by Week
Weeks 1-2
Start at 0.5mg/week. Your appetite dies. Food sits in front of you and you don't even care. Cravings vanish, portions shrink. Weight is already sliding off.
Weeks 3-6
The mirror catches up. Face tighter, waist pulling in, veins start crawling through. You don't just look like you're dieting — you look like you've been locked in for months.
Weeks 7-9
Full body recomposition phase. Clothes fit different. People start noticing. Every cardio session feels twice as effective. Your fat's melting off quick.
Weeks 10-12
You're becoming a whole new person. You don't even recognize your old self. R3ta doesn't bulk you — it strips you. Fast, clean, surgical.
The Science
Why Retatrutide Is Different
Retatrutide is a triple-agonist research compound that targets three receptors simultaneously — GIP, GLP-1, and glucagon. While semaglutide hits one and tirzepatide hits two, Retatrutide activates all three pathways at once. Researchers report this is why the body recomposition and facial transformation effects are so pronounced.
GLP-1 Receptor: Appetite suppression and blood sugar regulation — the same mechanism behind Ozempic and Wegovy.
GIP Receptor: Enhanced fat metabolism and improved insulin sensitivity — the added pathway in Mounjaro.
Glucagon Receptor: The third mechanism — directly increases energy expenditure and fat oxidation. This is what makes R3ta the "triple threat."
Verified Purity
Every Batch. Third-Party Tested.
We know the #1 fear: "How do I know it's real?" Every Kore batch is independently tested and verified at 99%+ purity. No guesswork. No scams. Just lab-verified research compounds.
US Lab COA
Janoshik COA
99%+ Purity
Batch Tested
Independent Lab
"I honestly regret not trying it sooner."
Common Questions
Got Questions? We've Got Answers.
We get it — the peptide space is full of shady vendors. That's exactly why every Kore batch comes with a Certificate of Analysis from an independent, third-party laboratory. Our Retatrutide is verified at 99%+ purity. We publish our COAs directly on this page. No WhatsApp groups, no mystery powders — just lab-verified research compounds from a real company.
Retatrutide (also called R3ta or LY-3437943) is a triple-agonist research peptide that targets three receptors: GIP, GLP-1, and glucagon. Think of it as the next generation beyond semaglutide (Ozempic) which hits one receptor, and tirzepatide (Mounjaro) which hits two. R3ta activates all three pathways simultaneously, which is why researchers report more pronounced body recomposition and facial transformation effects.
Ozempic (semaglutide) targets one receptor — GLP-1. Mounjaro (tirzepatide) targets two — GLP-1 and GIP. Retatrutide targets all three — GLP-1, GIP, and glucagon. The glucagon receptor is the key differentiator: it directly increases energy expenditure and fat oxidation, which is why researchers report faster and more visible body recomposition compared to single or dual-agonist compounds.
This product is sold strictly for research purposes. Published research protocols typically begin at 0.5mg per week for the first 1-2 weeks, then titrate upward based on tolerance. The 10mg vial is our most popular size as it provides flexibility for standard research protocols. Always consult published literature and a qualified professional before beginning any research protocol.
Published research reports that the most commonly observed effects include mild nausea (especially during initial dosing), decreased appetite, and occasional injection site reactions. These effects are generally transient and tend to diminish as the protocol continues. Serious adverse events are rare in published literature. This product is intended for research purposes only — always follow proper research protocols and consult relevant literature.
Yes. We ship worldwide. U.S. orders ship within 24 hours and typically arrive in 2-5 business days. International orders ship within 24-48 hours with delivery times varying by destination (usually 5-14 business days). All orders include tracking. We ship to the UK, Australia, Europe, Canada, and most other countries.
The 5mg vial is ideal for researchers just starting out or testing protocols at lower doses. The 10mg vial (our most popular) provides the best flexibility for standard 12-week research protocols. The 20mg vial is the best value per mg for experienced researchers running longer or higher-dose protocols. If you're unsure, the 2-vial 10mg bundle gives you the best combination of value and flexibility.
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