Retatrutide

Investigational weekly triple agonist. Phase 2 obesity trial used 1–12 mg after 4-week steps.

What it does / how it works

A triple agonist: GIP, GLP-1 and glucagon receptors. GLP-1/GIP handle appetite and insulin. The glucagon arm raises energy use and liver fat burn, which is also why GI effects and heart rate can run hotter than dual agonists.

Class GIP / GLP-1 / glucagon triple agonist
Typical vial 5–100 mg
Reconstitution 1–2 mL BAC water
Storage after mix 2–8°C, use within 28 days

Protocol

Goal Dose How often How long Route
Weeks 1-4 2 mg Once weekly 4 weeks SubQ
Weeks 5-8 4 mg Once weekly 4 weeks SubQ
Weeks 9-12 8 mg Once weekly 4 weeks SubQ
Week 13 on 8 or 12 mg Once weekly Up to 48 weeks in Phase 2 SubQ

Watch: No approved label. Skin tingling was more common than with dual agonists.

Retatrutide FAQ — Australia

ELV8 Labs offers Retatrutide in 10 mg vials, third-party tested at a leading Australian university. For research purposes only.
Semaglutide activates GLP-1 receptors only. Tirzepatide activates GIP and GLP-1 receptors (dual agonist). Retatrutide activates GIP, GLP-1, and glucagon receptors (triple agonist). The addition of glucagon receptor agonism promotes hepatic fat oxidation and increased energy expenditure, contributing to the greater weight reduction observed in Phase II trials.
Published clinical data shows that starting at the full target dose produces significant gastrointestinal side effects in test subjects. Gradual escalation over 4–8 weeks substantially reduces nausea and other GI effects while achieving equivalent long-term results.
Published Phase II data reported nausea, diarrhoea, vomiting, and constipation as the most common adverse events in test subjects. These effects were dose-dependent and most frequent during the dose-escalation phase. The 12 mg dose group had higher rates than lower dose groups.
Published Phase II data reported nausea, diarrhoea, vomiting, and constipation as the most common adverse events in test subjects. These effects were dose-dependent and most frequent during the dose-escalation phase. The 12 mg dose group had higher rates than lower dose groups.

Recommended Supplier — Retatrutide Australia

Our products offer premium-grade research materials with independent testing at a leading Australian university. Every batch is strictly verified by RP-HPLC and LC-MS. For research purposes only.

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