August 31, 2026 | Uncategorized
Patients ask for retatrutide by name now. They arrive with a number in their head and want the medication attached to it.
Here is what I tell them, in the order it comes up.
Start with what it is.
“Retatrutide is a triple hormone receptor agonist that targets three pathways: GLP-1, GIP and glucagon receptors.”
“At this time, there is no FDA-approved branded retatrutide product available.”
Then I back up, because most people asking do not know how the class works.
“The GLP-1 originally came out as a medication for diabetics. There are receptors in the stomach that make us feel full, and that same signaling helps lower blood sugar, which is how it helps diabetics control their sugar. It also communicates with the brain so your appetite goes down, you feel fuller and more satisfied, and it slows the intestine so your portions naturally get smaller. You eat the same way but smaller portions, and certain foods, like very greasy or very sugary foods, stop appealing to you. So your blood sugar comes down, your insulin comes down, your cortisol comes down, and the insulin resistance starts to rebalance.”
“Semaglutide was the first one and has just one component, GLP-1. Tirzepatide has two components, GLP-1 and GIP. It helps more with inflammation, helps with more weight loss, and has fewer side effects like nausea, heartburn, and vomiting.”
Retatrutide adds a third receptor, glucagon. That is the whole story of why anyone is excited.
How I dose the approved ones.
“We start with the smallest dose, which is 2.5 milligrams, for four weeks, and I see how you feel. If you are doing well I increase the dose depending on how you feel. If you are losing a good amount of weight, I keep you at that dose until you stop losing, then we go up again.”
“I give you the four injections for the whole month, and you inject yourself once a week. The injections are like an insulin shot, a tiny drop, usually in the abdomen, alternating sides each week. You can also use the inner thighs or the arms.”
Retatrutide was escalated the same way in trial, starting at 2 mg weekly and stepping up every four weeks.
Why people want help at all.
“As estrogen starts to drop, the other hormones start to change, the thyroid, insulin, and cortisol, and women tend to start gaining around the middle.”
“Insulin makes you very hungry and tired and causes you to store more fat. The metabolism slows down and cortisol rises, and that is part of why we gain weight.”
“Even if you exercise a lot and eat well, sometimes we need some kind of help.”
Then the comparison they came in for.
“Retatrutide, being a triple agonist targeting GLP-1, GIP, and glucagon receptors, may offer greater weight loss potential than semaglutide and tirzepatide. Semaglutide is a GLP-1 receptor agonist, whereas tirzepatide is a dual GLP-1 and GIP receptor agonist.
“Patient selection should be individualized rather than based on one peptide. Patients with obesity or overweight accompanied by metabolic complications such as prediabetes, insulin resistance, metabolic dysfunction-associated fatty liver, or cardiometabolic risk factors may all be appropriate candidates for any of the GLP forms.
“Selection should take into account the patient’s medical history, contraindications, treatment goals, metabolic profile, tolerability, and the specific medication indications.”
Someone who walks in asking about retatrutide often leaves on a medication that exists, because that is what the evaluation produced.
The number they came in with is usually real.
Lilly’s Phase 3 TRIUMPH-1 results, published in May, at 80 weeks:
| Dose | Average weight loss |
|---|---|
| 4 mg | 19.0 percent |
| 9 mg | 25.9 percent |
| 12 mg | 28.3 percent |
| Placebo | 2.2 percent |
At 12 mg, 42 percent reported nausea, one in eight had abnormal skin sensation, and about one in nine stopped over side effects. At 4 mg, fewer dropped out than on placebo.
Where approval actually is.
Lilly suggested it might submit to the FDA before the end of this year. In July the company pushed that to the first quarter of 2027, citing manufacturing and quality control data it still needs to assemble. Submission is not approval. Add review time on top.
And the part I want read twice.
“An important safety consideration with GLP-1 based therapies and other peptide treatments is the importance of ongoing evaluation, treatment, and follow-up by a qualified licensed medical professional. Patients should undergo appropriate screening before treatment.
“Appropriate clinical oversight and sourcing medication through legitimate, appropriately licensed pharmacies can also help reduce the risk of obtaining counterfeit, contaminated, improperly compounded or otherwise unsafe products from unverified sources.
“Patients should be educated to obtain their medications only through authorized and reputable channels and to avoid products purchased from unverified websites, social media, or any other unauthorized sellers.”
A fair number of people reading this have already bought something online. If that is you, bring it in. I would rather look at it with you than have you keep injecting it alone.
What to do while you wait.
The approved medications work, and what I tell patients on them does not change with whichever molecule is trending:
“Your appetite will go down. Many patients stop eating and only eat at mealtime, but I do not want you to do that, because if your blood sugar drops you will feel tired. I want you to eat small amounts during the day, snacking on something like a fruit, so your blood sugar stays more stable. I also want you to eat more protein so you do not lose as much muscle and we burn more fat.”
“Walk twenty to thirty minutes a day. Once you feel a little better, add light weights while you walk. That helps the muscle grow and burns more fat.”
That runs through the medically supervised weight loss program at Southwest Plastic Surgery. If you have already lost the weight and the skin did not follow, that is a different conversation, and it is mine: body contouring after major weight loss is what I do when medication has finished its part of the job.
For the full trial breakdown, dosing as it was studied, and the side effect numbers, read the complete guide on the Southwest Plastic Surgery site. My take for a wider audience is at drworldwide.com.
Call (915) 590-7900, text 1-866-814-0038, or book online at agulloplasticsurgery.com. #StayBeautiful
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