For Laboratory Research Use Only · Not for Human or Veterinary Use · 21+
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Retatrutide vial

Best Peptides for Weight Loss·Injection

Retatrutide

Triple GLP-1, GIP, glucagon agonist for record fat loss.

Size

$329.99/ 10 mg vial
View Retatrutide lab results & testing

For Research Use Only

Retatrutide is sold strictly for in-vitro laboratory research. Not for human or veterinary use, diagnosis, treatment, cure, or prevention of any disease. Not FDA-approved as a therapeutic. Must be 21+ and a qualified researcher to purchase. See our Disclaimer and Research Use Agreement.

Purity
≥ 99.0% HPLC
Format
Injection
Half-life
6 days
Dose
2–12 mg weekly
Mechanism
Triple GLP-1 + GIP + glucagon receptor agonist

About Retatrutide

Retatrutide is a triple GLP-1, GIP, and glucagon receptor agonist that produced 24.2% weight loss at 48 weeks in the 2023 Phase 2 trial - the highest reported across any weight-loss peptide to date.

Reported benefits

  • Drives 24.2% weight loss at 48 weeks (Phase 2)
  • Raises resting energy expenditure by 4–6%
  • Triggers hepatic lipolysis via glucagon arm

Research citations

  • Jastreboff et al. 2023 - NEJM Phase 2
  • Rosenstock et al. 2023 - Lancet

How Retatrutide fits the category

Retatrutide sits inside the Best Peptides for Weight Loss category. For the full ranking and head-to-head comparisons, read Best Peptides for Weight Loss.