What is the difference between Liraglutide and Retatrutide?

Liraglutide (Liraglutide (Saxenda / Victoza)) is graded A+ and is FDA-approved for weight management (Saxenda) and type 2 diabetes (Victoza). Retatrutide (Retatrutide (LY3437943)) is graded A and is Not FDA-approved — Phase 3 trials (TRIUMPH program) for obesity. They are commonly compared because they share the categories: weight-loss, metabolic.

Which has stronger clinical evidence — Liraglutide or Retatrutide?

On our internal evidence scale, Liraglutide is A+ and Retatrutide is A. A+ indicates large RCTs plus FDA approval; C indicates primarily preclinical or anecdotal evidence.

What is the typical dose of Liraglutide vs Retatrutide?

Liraglutide: 0.6–3.0 mg daily (subcutaneous). Retatrutide: Trial range: 1–12 mg weekly (subcutaneous). Always work with a licensed clinician — peptide dosing should be individualized.

Liraglutide vs Retatrutide

Both Liraglutide and Retatrutide are used for weight-loss and metabolic. Here's how their evidence, dosing, and regulatory status actually compare.

Liraglutide

Evidence A+

Liraglutide (Saxenda / Victoza)

The original once-daily GLP-1 receptor agonist. Lower weight-loss magnitude than semaglutide but a longer real-world track record across diabetes and obesity.

View full Liraglutide profile →

Retatrutide

Evidence A

Retatrutide (LY3437943)

Triple agonist at GLP-1, GIP, and glucagon receptors. Phase 2 produced 24.2% mean weight reduction at 48 weeks — the highest ever in a clinical obesity trial.

View full Retatrutide profile →

Side-by-Side

Attribute	Liraglutide	Retatrutide
Evidence Grade	A+	A
FDA Status	FDA-approved for weight management (Saxenda) and type 2 diabetes (Victoza)	Not FDA-approved — Phase 3 trials (TRIUMPH program) for obesity
Typical Dose	0.6–3.0 mg daily (subcutaneous)	Trial range: 1–12 mg weekly (subcutaneous)
Clinics Indexed	540	12
Categories	weight-loss, metabolic	weight-loss, metabolic

Key reported benefits — Liraglutide

✓Weight loss
✓Appetite suppression
✓Glycemic control

Key reported benefits — Retatrutide

✓Highest reported weight loss
✓Triple incretin/glucagon mechanism
✓Metabolic improvement

Educational use only

This comparison is for educational purposes and not medical advice. Peptide selection should be made with a licensed medical professional based on your individual goals, health history, and current evidence quality.

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