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Research summary

GLP2-T — clinical & mechanistic profile

GLP2-T (Tirzepatide) is an FDA-approved dual GIP/GLP-1 receptor agonist. 2026 meta-analyses confirm superiority over semaglutide: -22.1% weight loss vs -17.1% at 12 months, with 95.2% achieving ≥10% loss. SURPASS trials show HbA1c reductions of 1.8-2.4%. Ongoing cardiovascular outcomes study (NCT07096063) compares long-term MACE endpoints vs semaglutide.

Research status

clinical investigational

Molecular weight

4813.45 g/mol

Molecular formula

C225H348N48O68

Studied applications

  • FDA-approved: GLP2-T (2022) for type 2 diabetes, GLP2-T (2023) for chronic weight management
  • Imbalanced dual agonism: full GIPR agonism (equal to native GIP) + biased partial GLP-1R agonism (favoring cAMP over β-arrestin)
  • SURPASS trials: HbA1c ↓1.8-2.4%, weight ↓7-12 kg; superior to glp1-s and insulin comparators
  • SURMOUNT trials: 15-22.5% body weight loss at 15 mg over 72 weeks (up to 28.7 kg mean reduction)
  • Metabolic benefits: increased adiponectin, reduced branched-chain amino acids, improved insulin sensitivity beyond weight loss

Mechanisms of action

  • GIPR full agonism: mimics native GIP, enhances post-meal insulin secretion, promotes lipid clearance and fat oxidation
  • GLP-1R biased partial agonism: favors cAMP over β-arrestin signaling, weaker receptor internalization vs native GLP-1
  • Dual synergy: combined incretin activation produces effects exceeding either pathway alone
  • Central appetite suppression: hypothalamic GIP/GLP-1 receptor activation reduces food intake and cravings
  • Hepatic effects: reduces hepatic de novo lipogenesis, increases fat oxidation
  • Extended half-life: C20 fatty di-acid moiety enables albumin binding for once-weekly dosing
Research constraints & safety notes
  • FDA-approved medications (GLP2-T, GLP2-T) require prescription and medical supervision
  • Boxed warning: thyroid C-cell tumor risk based on rodent studies—contraindicated in MTC/MEN2
  • Common side effects: nausea (12-33%), diarrhea, vomiting, constipation—especially during dose escalation
  • Research compounds are separate from approved pharmaceutical products
  • Not studied in patients with gastroparesis, pancreatitis history, or severe GI disease

Peer-reviewed references

  1. Jastreboff AM, et al. — SURMOUNT-1 Phase 3 obesity trial (NEJM 2022)PMID: 34170647View
  2. Frias JP, et al. — SURPASS trials glycemic efficacy (Lancet 2021)PMID: 34986299View
  3. SURPASS-CVOT cardiovascular outcomes (NEJM 2023)PMID: 37840095View
  4. GLP2-T mechanism of action reviewPMID: 36781283View
  5. JCI Insight 140532 — GLP2-T receptor binding and biased agonism

For research use only. This summary is a research-scientific overview compiled from peer-reviewed sources. It is not medical advice and is not intended for human or veterinary consumption.

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