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Third Generation
GLP peptide.

Targets three receptor pathways:

  1. 1GLP-1Appetite and insulin signaling
  2. 2GIPGlucose and adipose signaling
  3. 3GlucagonStored-energy signaling

Choose your vial

Buy 10mgBuy 20mg
Catalyst GLP-3 Retatrutide vial

What the
Science Shows.

Research-use vial. Independent U.S. lab verified.

28.7%
AVE. BODY WEIGHT LOSS
86%
LIVER FAT
41%
TRIGLYCERIDES
Catalyst GLP-3 Retatrutide vial
Third Generation

GLP peptide.

Targets three receptor pathways:

  1. GLP-1Appetite and insulin signaling
  2. GIPGlucose and adipose signaling
  3. GlucagonStored-energy signaling
Buy 10mgBuy 20mg

What you should know.

Catalyst batch-tests peptides at independent U.S.-based laboratories to the highest industry standards, including mass spectrometry confirming identity, HPLC measuring purity (>99% target), and sterility and endotoxin assays. An independent laboratory report (Certificate of Analysis) ships with every order. Learn how to read a COA.

Catalyst offers GLP-3 peptides in two concentrations: 10mg and 20mg per vial.

Unreconstituted vials hold in a cool, dry place out of direct sunlight. After reconstitution, refrigerate at 2 to 8°C.

Yes. Batch-level documentation can be reviewed before purchase so purity, identity, and testing details are clear before checkout.

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Safety information

GLP-3 Retatrutide

This is not medical advice. This product is sold for research use only. It is not intended for human use, medical treatment, diagnosis, cure, or prevention.

Common side effects

Most people experience nausea, fatigue, or GI upset, especially during the first few weeks of titration. These usually subside as the body adjusts. If symptoms are severe or persistent, hold the current dose for an extra week before escalating.

Talk to a clinician first about

  • A history of pancreatitis
  • Personal or family history of medullary thyroid carcinoma or MEN-2
  • Severe kidney or liver disease
  • Current pregnancy or breastfeeding

Stop and seek immediate care for

  • Severe abdominal pain that does not go away
  • Signs of an allergic reaction (rash, swelling, difficulty breathing)
  • Persistent vomiting or signs of dehydration
  • Yellowing of skin or eyes