Investigational · not FDA approved

Editorially reviewed · Last updated September 8, 2026 · How we review

How to Sign Up for a Retatrutide Clinical Trial

Part of Find a retatrutide clinical trial.

How to Sign Up for a Retatrutide Clinical Trial

To apply for a retatrutide trial, use Lilly's official study finder or a verified Lilly-sponsored ClinicalTrials.gov record, then contact a recruiting site. A registry listing is not an application, and “active, not recruiting” means the study is closed to new participants.
At this review on September 8, 2026, SYNERGY-Outcomes, a liver-disease master protocol that includes a retatrutide substudy, is recruiting. TRIUMPH-7 is now active, not recruiting. Eligibility for the liver study is specific; it is not a general weight-loss signup route.

Where to Find Trials

ResourceURLWhat It Does
ClinicalTrials.govclinicaltrials.govU.S. government registry of clinical studies. Search "retatrutide" and filter for "Recruiting"
Lilly Trial Connecttrials.lilly.comEli Lilly's matching tool. Answers a few questions to find trials you may be eligible for
Your doctor—Ask your healthcare provider — they may be connected to a trial site or can refer you

Which Trials Are Still Enrolling

StudyStatus checked September 8, 2026What this means for signup
SYNERGY-Outcomes / MASLD master protocolRecruiting; record updated August 21, 2026Contact a listed site about the retatrutide substudy and liver-disease eligibility
TRIUMPH-7Active, not recruiting; record updated July 23, 2026No longer an open signup option
TRIUMPH-5Active, not recruiting; record updated July 20, 2026Closed to new participants
TRIUMPH-OutcomesActive, not recruitingClosed to new participants
Recruitment can differ between sites and change after a registry update. Check the individual location's status, sponsor and contact details. Use Lilly's finder to confirm the study before sharing medical information. The master protocol includes separate tirzepatide and retatrutide substudies; joining it does not guarantee retatrutide.

General Eligibility Criteria

Eligibility is trial-specific. The currently recruiting SYNERGY-Outcomes record requires evidence of liver disease beyond BMI alone.

Inclusion Criteria

The master protocol lists liver fat content of at least 8%, an ELF score from 9 to 10.8, and liver stiffness by VCTE from 10 to less than 20 kPa. Adults must be at least 18 years old. These are screening measures for the study team to interpret, not self-diagnosis criteria.

Exclusion Criteria

Examples in that record include other liver diseases, BMI below 25, prior decompensated liver disease, more than 11 lb of weight loss in the previous three months, HbA1c above 10%, and type 1 diabetes. The study team checks all criteria and any substudy requirements.

Other trials use different rules. A medication restriction in one TRIUMPH protocol should not be treated as a universal washout instruction.


How the Enrollment Process Works

Step 1: Search for Active Trials

Use ClinicalTrials.gov or Lilly Trial Connect to find recruiting trials near your location. Filter for "Recruiting" status.

Step 2: Review the Details

Check inclusion and exclusion criteria against your health profile. Note the study duration, visit frequency, and location requirements. Ask how long your own participation lasts, how often visits occur and whether imaging or other assessments require travel. A registry's overall study completion date is not your individual participation period.

Step 3: Contact the Trial Site

Each trial listing includes phone numbers and email addresses for study sites. Some sites have online contact forms. Your current doctor may be able to facilitate the referral.

Step 4: Screening

If you pass initial eligibility checks, the screening process includes:

  • Informed consent — explanation of known and potential risks, possible benefits and study procedures
  • Lab work and vital signs
  • Full medical history review
  • BMI verification
  • Medication review
  • Condition-specific assessments (e.g., knee X-rays for OA trials, eGFR for kidney trials)

Step 5: Randomization

Randomization and blinding depend on the protocol. Some studies compare retatrutide with placebo; TRIUMPH-5 compares it with tirzepatide. Ask which treatments the study uses and your assignment probabilities. In a blinded study, participants generally do not know their assigned treatment.


What to Expect During the Trial

Duration and Visits

Ask the site for the visit schedule, testing requirements, time away from work and follow-up period. These vary by protocol. Tell the team about symptoms and medication changes throughout the study.

Dose Titration

The study team supplies and manages the protocol's dosing schedule. Published trial doses are not instructions for applicants to start, stop or alter medication before screening.

The Placebo Question

A placebo-controlled study does not guarantee active treatment. Other protocols use an active comparator instead. Ask about the assigned treatments, masking, rescue treatment and any extension before consenting. Do not infer a placebo probability from another TRIUMPH trial.


What You Receive

Lilly says most studies provide investigational medicine and study visits at no cost, but costs and payments vary. Confirm the details in the consent document before joining.

Ask aboutWhy it matters
Study medication and required testsConfirm which costs the sponsor covers
Usual medical careAsk whether ordinary care outside the study is covered
Visit payments and travelConfirm amounts, reimbursement rules and payment timing
Care for research-related injuryAsk what care and financial arrangements apply

What You Do NOT Receive

Enrollment does not guarantee benefit or assignment to retatrutide. It also does not establish continued access after the study. Ask specifically about any extension and the plan for care when participation ends.

You can withdraw from a trial. Discuss safe withdrawal and follow-up with the study team rather than stopping contact or medication without a plan.


Frequently Asked Questions

Can I sign up for a retatrutide trial right now?

The SYNERGY-Outcomes liver-disease master protocol is recruiting at this review; contact a listed site about its retatrutide substudy. TRIUMPH-7 is now active, not recruiting. Recheck Lilly's official finder and the individual site's status.

What are my chances of getting the real drug vs placebo?

The study's randomization plan determines that. Some trials use placebo and others use an active comparator. The consent discussion should explain your study's treatment groups and assignment probabilities.

Can I continue taking retatrutide after the trial ends?

Do not assume continued access. Ask about an extension, the end-of-study treatment plan and what happens if retatrutide remains unapproved.

Can I participate if I am already taking Ozempic or Mounjaro?

Medication restrictions vary by protocol. Tell the study team exactly what you take. Do not stop prescribed treatment to qualify without coordinating with your clinician and the study team.

Is the trial free?

Many trials cover study medicine and required visits, but ordinary care, travel and compensation arrangements vary. Read the consent document and ask the site for written details.

What if I experience side effects?

Report symptoms promptly to the study team and follow its contact instructions. Ask before joining how urgent problems and research-related injury are handled. You can withdraw, with an appropriate follow-up plan.


Sources

How we keep this honest
What this is
Educational information, not medical advice. It reports published research — it doesn’t recommend that you use, obtain, or supply anything.
Regulatory status
Retatrutide and similar peptides are investigational — not approved by the FDA or any regulator. Semaglutide and tirzepatide are prescription-only medicines, available only through a licensed prescriber.
Our standard
Every claim traces to a primary source. We label the strength of evidence and flag estimates as estimates — never as clinical fact.
No commercial ties
We don’t sell, supply, or link to suppliers of any medicine, and aren’t affiliated with any manufacturer.

Do not make decisions about your health without consulting a qualified healthcare provider. For trial enrolment, see ClinicalTrials.gov. More on how we review.

Sources

Grounded in primary sources
NEJMThe LancetJAMAFDAClinicalTrials.gov