Retatrutide vs Epithalon

A comprehensive, data-driven comparison of Retatrutide (LY3437943) and Epithalon (Epitalon). Compare efficacy, side effects, costs, FDA approval status, and clinical evidence to make an informed decision.

Retatrutide
Phase 3 (NDA expected late 2026)
Obesity and weight management
Evidence
High
Avg. Weight Loss28.7%
Monthly Cost$1,200 - $1,500/mo
DosingWeekly
ManufacturerEli Lilly
Epithalon
Not submitted
Anti-aging and longevity research
Evidence
Emerging
Monthly Cost$40 - $80/mo
DosingCyclical

Side-by-Side Comparison

PropertyRetatrutide
LY3437943
Epithalon
Epitalon, Epithalone
FDA Status
Phase 3 (NDA expected late 2026)
Not submitted
Category
Weight Loss
Anti-Aging
Primary Use
Obesity and weight management
Anti-aging and longevity research
Weight Loss %
28.7%
N/A
Monthly Cost
$1,200 - $1,500/mo
$40 - $80/mo
Administration
Subcutaneous injection
Subcutaneous injection
Typical Dose
12mg weekly (dose escalated from 2mg)
5-10mg per cycle (10-20 days, 2-3x per year)
Frequency
Weekly
Cyclical
Mechanism

Triple agonist targeting GIP, GLP-1, and glucagon receptors to enhance insulin secretion, reduce appetite, and increase energy expenditure

Tetrapeptide that may activate telomerase enzyme to lengthen telomeres and potentially extend cellular lifespan

Common Side Effects
  • Nausea
  • Diarrhea
  • Vomiting
  • Constipation
  • +3 more
  • Injection site reactions
  • Mild drowsiness
  • Vivid dreams
Serious Side Effects
  • Pancreatitis
  • Gallbladder disease
  • Severe gastrointestinal reactions
  • Hypoglycemia (if combined with insulin)
  • Unknown long-term effects
  • Theoretical cancer risk with telomerase activation
Evidence Quality
High
Emerging
Clinical Trial Phase
Phase 3
N/A

Key Differences

  • 1Retatrutide has clinical weight loss data (28.7%), while Epithalon is not primarily indicated for weight loss.
  • 2Epithalon is generally more affordable ($40 - $80/mo) compared to Retatrutide ($1,200 - $1,500/mo).
  • 3Retatrutide is dosed weekly, while Epithalon is cyclical.
  • 4Retatrutide has high-quality evidence, while Epithalon has emerging-quality evidence.
  • 5They belong to different categories: Retatrutide (Weight Loss) vs Epithalon (Anti-Aging).

Which Is Better For...

EP

Epithalon

More budget-friendly option with lower monthly costs

EP

Epithalon

More convenient dosing schedule (cyclical)

EP

Epithalon

Fewer commonly reported side effects

RE

Retatrutide

Stronger clinical evidence base to support its use

Cost Comparison

PeptideMonthly Cost RangeFDA StatusManufacturer
Retatrutide$1,200 - $1,500/mo
Phase 3 (NDA expected late 2026)
Eli Lilly
Epithalon$40 - $80/mo
Not submitted
Various research labs

Prices are estimated monthly costs and may vary based on pharmacy, insurance coverage, and manufacturer assistance programs. Costs for non-FDA-approved peptides reflect research compound pricing.

Frequently Asked Questions

What is the main difference between Retatrutide and Epithalon?

Retatrutide works via Triple agonist targeting GIP, GLP-1, and glucagon receptors to enhance insulin secretion,. Epithalon works via Tetrapeptide that may activate telomerase enzyme to lengthen telomeres and potentially extend. They differ in FDA approval status, efficacy data, and cost.

Which is more effective for weight loss, Retatrutide or Epithalon?

Retatrutide has demonstrated 28.7% average weight loss in clinical trials. Epithalon is not primarily used for weight loss.

How much does Retatrutide cost compared to Epithalon?

Retatrutide typically costs $1,200 - $1,500/mo, while Epithalon costs $40 - $80/mo. Prices may vary by pharmacy, insurance coverage, and manufacturer programs.

Are Retatrutide and Epithalon FDA approved?

Retatrutide is not FDA-approved (Phase 3 (NDA expected late 2026)). Epithalon is not FDA-approved (Not submitted). FDA approval indicates the treatment has met rigorous safety and efficacy standards.

What are the side effects of Retatrutide vs Epithalon?

Common side effects of Retatrutide include Nausea, Diarrhea, Vomiting. Common side effects of Epithalon include Injection site reactions, Mild drowsiness, Vivid dreams. Always consult a healthcare provider about potential side effects.

Can I switch from Retatrutide to Epithalon?

Switching between peptide therapies should only be done under the guidance of a qualified healthcare provider. They can evaluate your medical history, current response, and determine the safest transition protocol.

Learn More

Retatrutide Full Profile
Obesity and weight management

Retatrutide is a novel triple-receptor agonist developed by Eli Lilly currently in Phase 3 clinical trials. It has demonstrated unprecedented weight loss results, with patients losing an average of 28...

View Full Retatrutide Guide
Epithalon Full Profile
Anti-aging and longevity research

Epithalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) researched primarily in Russia for its potential anti-aging properties. The proposed mechanism involves activation of telomerase, an enzyme that...

View Full Epithalon Guide

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Medical Disclaimer

The information provided on this page is for educational and informational purposes only and does not constitute medical advice. This comparison between Retatrutide and Epithalon should not be used as a substitute for professional medical guidance. Always consult a qualified healthcare provider before starting, stopping, or modifying any peptide therapy. Clinical data cited may be from ongoing trials and is subject to change. Individual results may vary significantly. PeptideVS does not endorse, recommend, or promote the use of any specific peptide for medical treatment.