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Retatrutide
Lab verified99.2% pureHPLC + Mass specEndotoxin tested
PS-101 · Metabolic Research

Retatrutide

4.9 · 214 reviews

A triple-agonist peptide investigated in clinical trials for metabolic and body-composition endpoints. One of the most-studied next-generation incretin candidates.

Read the Retatrutide research guide→
$87.218.72/mg
Vial size

In stock

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Frequently paired with
  • Great value!
    Make this a kit
    Retatrutide + 3 mL BAC water + 10 syringes + 10alcohol pads — pads free, water & syringes 25% off
    Starting at
    $102.32
    $110.35
  • Bacteriostatic Water
    0.9% benzyl alcohol water for reconstitution, sold as a single vial.
    $13.14
  • Insulin Syringes
    31G 0.5 mL sterile syringes, sold in packs of 10, 100, or 300.
    $7
  • Alcohol Prep Pads
    70% isopropyl alcohol pads, sold in packs of 10 or 200.
    $3
  • Best value!
    Metabolic Starter Kit: Beginner
    The entry metabolic bench set: Semaglutide (a GLP-1 reference compound) with Tesamorelin, plus the water to reconstitute them. 10 syringes and a 10-pack of alcohol prep pads are included free, an added bonus with every starter kit.
    Starting at
    $149
    $207

Molecular specification

Molecular formula
C221H342N46O68
Molecular weight
4731.3 g/mol
CAS number
2381089-83-2
Amino acids
39
Appearance
White lyophilized powder
Purity (HPLC)
99.2%
Elimination half-life
≈ 6 days (144–165 h)

Mechanism & published research

Acts as an agonist at GLP-1, GIP, and glucagon receptors simultaneously; the added glucagon activity is the primary point of research interest versus dual agonists.

  • Studied for significant body-weight change over 48 weeks in a phase 2 program.

    human trialadults with obesity, phase 2 RCT·Jastreboff et al., 2023 (representative)PubMed ↗
  • Triple-receptor pharmacology characterized in receptor-binding and preclinical models.

    mechanisticin vitro receptor assays·Coskun et al., 2022 (representative)PubMed ↗

Descriptions summarize existing published research and are not claims about outcomes from use. Every citation states its study type and population.

How it compares

VersusAttributeNote
TirzepatideReceptor targetsRetatrutide adds glucagon-receptor activity to the GLP-1/GIP profile.
SemaglutideMechanismSemaglutide is GLP-1 only; retatrutide is a triple agonist.

Retatrutide vial research model

Published study charts, concentration and supply calculations, with an interactive preparation model.

Open the full reference →

Reconstitution

Concentration math only: add bacteriostatic water to the vial and the resulting concentration is shown below. This is not usage guidance.

VialBacteriostatic waterConcentration
10 mg2 mL5 mg/mL
20 mg2 mL10 mg/mL
30 mg2 mL15 mg/mL
60 mg2 mL30 mg/mL
Open the reconstitution calculator →

Storage & stability

StateTemperatureDuration
Lyophilized (unopened)-20°C24 months
Reconstituted2–8°Cup to 4 weeks

Reviews

4.9
Based on 214 verified purchases

Reviews are collected post-delivery and screened to exclude any human-use or dosing-outcome claims before publication. They speak to product quality, shipping, and COA accuracy.

Verified
“99.2% on the certificate and the reconstituted solution was water-clear with no particulates.”
@westside.research · 2026-06-28
Verified
“The lot on the vial matched the COA in the hub and verified on the lab portal. That check is why I keep ordering.”
@northbench · 2026-06-05
Verified
“The batch on the vial resolved on the verification page instantly. Consistent with what the product page listed.”
@a.novak · 2026-04-30
Read more verified reviews →

Product FAQ

What vial sizes are available?+

10 mg, 20 mg, and 30 mg lyophilized vials, each with a lot-specific COA.

How is it shipped?+

Lyophilized, with an insulated cold pack, tracked. Reconstitute on arrival or keep frozen.