Triple Agonist · GLP-1 + GIP + Glucagon

The next generation
of weight loss
is almost here.

Retatrutide produced 28.7% mean body weight loss in Phase 3 trials — the highest ever recorded for an obesity medication. FDA approval is expected in 2027. Be first in line for physician-supervised access.

28.7%
Mean Weight Loss · TRIUMPH-4
68 wk
Phase 3 Trial Duration
Hormone Targets vs. GLP-1 alone
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The Science

Why triple agonism
changes everything

Every approved GLP-1 medication works by targeting one or two metabolic pathways. Retatrutide targets three simultaneously — producing weight loss that dwarfs anything previously seen in a Phase 3 obesity trial.

GLP-1

Appetite Suppression

GLP-1 receptor agonism slows gastric emptying and signals satiety to the brain, reducing caloric intake. This is the same mechanism behind semaglutide and tirzepatide.

GIP

Insulin Sensitivity

GIP receptor agonism improves insulin secretion and adipose tissue metabolism, enhancing the body's ability to utilize nutrients efficiently. Shared with tirzepatide.

Glucagon

Energy Expenditure

Glucagon receptor agonism increases resting metabolic rate and promotes fat oxidation in the liver. This is retatrutide's key differentiator — no other approved drug does this.

Result

Unprecedented Efficacy

The combination produces weight loss that approaches surgical outcomes in some patients — without surgery. TRIUMPH-4 reported complete knee pain relief in 1 in 8 participants.

TRIUMPH Phase 3 Data

What the trials show

"Patients on the 12mg dose lost an average of 28.7% of their body weight over 68 weeks — the highest weight loss ever reported in a Phase 3 obesity trial."
TRIUMPH-4 · Eli Lilly · December 2025

How retatrutide compares to currently approved medications at maximum doses:

Medication Mechanism Mean Weight Loss
Semaglutide (Wegovy) GLP-1
~15%
Tirzepatide (Zepbound) GLP-1 + GIP
~20%
Retatrutide (investigational) GLP-1 + GIP + Glucagon
28.7%

Data from published Phase 2 and Phase 3 clinical trials. Retatrutide is investigational and not FDA approved. Direct comparisons across trials should be interpreted cautiously.

When can you get it?

Based on Eli Lilly's public statements and standard FDA review timelines. These are projections, not confirmed dates.

December 2025
TRIUMPH-4 Results Published
28.7% mean weight loss at 68 weeks confirmed. Seven additional Phase 3 readouts expected through 2026.
2026
Remaining Phase 3 Readouts
Seven TRIUMPH trials covering obesity, type 2 diabetes, sleep apnea, MASH, and cardiovascular outcomes expected to complete.
Late 2026 · Early 2027
NDA Filing with FDA
Eli Lilly expected to submit a New Drug Application once Phase 3 data package is complete.
2027
Anticipated FDA Approval
Under standard 10-month review, approval could come Q1–Q2 2027. Priority review designation could accelerate this timeline.
Get Notified

Don't wait until
everyone is waiting.

Join the waitlist now. When retatrutide is approved, you'll be among the first to access it through a licensed physician.

✓  You're on the list.

Physician-supervised. Legitimate prescription access. No grey market.