Retatrutide: What to Know and Your Weight Loss Options Now in Ardmore, OK

Quick answer: Retatrutide is an investigational once-weekly weight loss injection from Eli Lilly. It is called a "triple agonist" because it acts on three hormone receptors: GLP-1, GIP, and glucagon. In clinical trials, people on the highest dose lost an average of roughly 24% of their body weight in under a year and close to 28 to 30% in longer late-stage studies, which is more than current approved medications. However, as of September 2026, retatrutide is not FDA approved, and approval is not expected before 2027. Retatrutide sold online as a "research peptide" is unregulated and risky. Proven options like semaglutide and tirzepatide are available today through a medical weight loss program.

If you have seen retatrutide on social media, you are not alone. Patients in Ardmore, Lone Grove, Marietta, and Madill ask us about it regularly. Here is what we know, what we do not know yet, and what you can do right now.

How does retatrutide work?

Today's popular weight loss medications work on one or two gut hormones:

• Semaglutide (Wegovy, Ozempic) acts on GLP-1, which reduces appetite and slows digestion.
• Tirzepatide (Zepbound, Mounjaro) acts on GLP-1 and GIP, which adds further effects on appetite and blood sugar.

Retatrutide adds a third target, glucagon. Glucagon activity may increase the amount of energy the body burns and help the liver clear fat. The combination of lower appetite plus higher energy use is why researchers think retatrutide produces such large weight loss.

How much weight do people lose on retatrutide?

• In a 2023 Phase 2 study published in the New England Journal of Medicine, adults on the highest dose lost an average of 24.2% of body weight at 48 weeks.
• Phase 3 (TRIUMPH) trials reported since late 2025 have shown average losses in the high 20s percent at the top dose over longer treatment periods, which for many patients means 60 to 70 pounds or more.

For comparison, average weight loss in major trials is about 15% for semaglutide 2.4 mg and about 20 to 22% for tirzepatide at its highest dose. Retatrutide appears to go further, but it is still being studied.

Retatrutide side effects

Because it is still in trials, the full safety picture is not known yet. Reported side effects so far include:

• Nausea, vomiting, diarrhea, and constipation, similar to other GLP-1 medications and most common as the dose increases
• Decreased appetite, which is the intended effect but can go too far without guidance
• Increased heart rate in some participants
• Skin sensitivity or tingling (dysesthesia), reported in some late-stage trial participants
• Loss of muscle along with fat, a concern with any rapid weight loss

Very large, fast weight loss can also cause gallstones, hair shedding, and loose skin. Medical supervision matters with any of these drugs.

When will retatrutide be FDA approved?

Eli Lilly is still completing its Phase 3 program. The company is expected to submit it to the FDA after those studies finish, and a standard FDA review usually takes about 10 to 12 months. Most estimates put a possible approval no earlier than 2027. Until then, the only legitimate way to receive retatrutide is through a clinical trial or a formal expanded access program.

Why you should avoid "research" retatrutide sold online

Because retatrutide is so popular on social media, websites are selling vials labeled "for research use only." Please do not use these:

• They are not approved and not legally sold for human use.
• There is no guarantee of the dose, purity, or sterility.
• The FDA has warned about unapproved and counterfeit weight loss drugs, and testing has found contaminated and mislabeled products.
• No one is monitoring you for side effects like dehydration, gallbladder problems, or dangerous drops in blood sugar.

A licensed medical provider will not prescribe retatrutide outside of a trial right now, and any clinic offering it should be a red flag.

What works right now: medical weight loss in Ardmore

You do not have to wait for the next new drug to make real progress. Our medical weight loss program at Ardmore Aesthetic Solutions includes:

1. A full consultation and health history, plus lab work through our primary care team when needed
2. GLP-1 medication when appropriate, such as semaglutide or tirzepatide, with careful dose adjustments to limit side effects
3. Nutrition guidance focused on protein to protect muscle
4. Regular check-ins to track progress and adjust your plan
5. Support for the finishing touches, such as Morpheus8 or Evolve Transform for loose skin and body contouring after weight loss

Some patients also add peptide therapy or IV therapy for energy and recovery. We will talk through what makes sense for you.

Frequently asked questions

Is retatrutide available yet?

No. As of September 2026, retatrutide is investigational and available only through clinical trials or formal expanded access programs. It is not sold at pharmacies or clinics.

Is retatrutide better than tirzepatide?

In trials, retatrutide has produced greater average weight loss than tirzepatide. However, the two have not been fully compared head to head, and retatrutide's long-term safety is still being studied.

Is retatrutide a peptide?

Yes, it is a peptide-based medication, which is why it often shows up in "peptide" conversations. Unlike wellness peptides, it is a prescription drug candidate that must go through full FDA approval.

Can I switch to retatrutide once it is approved?

Possibly. If it is approved, patients already on semaglutide or tirzepatide may be able to transition under medical guidance. Starting a proven program now does not prevent you from trying newer options later.

Where can I get medical weight loss near Ardmore, OK?

Ardmore Aesthetic Solutions offers physician assistant led medical weight loss for patients in Ardmore, Lone Grove, Marietta, Madill, Healdton, Dickson, and throughout Carter County.

Start your weight loss plan today

New medications will keep coming, and we will keep you informed. In the meantime, safe and effective treatment is available right here in Ardmore.

Call (580) 633-6099 or book online to schedule a weight loss consultation at Ardmore Aesthetic Solutions, 1420 12th Ave NW, Ardmore, OK 73401.

This article is for educational purposes and is not medical advice. Drug development information is current as of September 2026.