How to Get Retatrutide in 2026 (Legally and Safely)

In the world of weight loss medications, there’s a new one—retatrutide—that could be a game changer in treating obesity and severe obesity, as well as improving blood sugar levels. Here’s how it’s different from previous medications: Retatrutide is a triple agonist, meaning it targets three different hormone receptors, rather than one (like Ozempic) or two (like Mounjaro or Zepbound). 

With this triple action, research has shown this GLP-3 to be even more effective than currently available weight loss medications like semaglutide or tirzepatide (although the data hasn’t been compared head to head yet). In a recent phase 3 clinical trial called TRIUMPH-1, adults with obesity lost 25% of their body weight after 80 weeks when taking the highest dose of retatrutide, 12 milligrams (mg). At 104 weeks, they’d lost an average of 29.9% of their weight. 

Other phase 3 clinical trials (with similar TRIUMPH names) show noteworthy results, too: 

• In the TRIUMPH-2 study, adults with obesity and type 2 diabetes taking 12 mg of retatrutide lost 18.8% of their weight after 80 weeks. 
• In the TRIUMPH-3 study, adults with severe obesity and cardiovascular disease, with or without type 2 diabetes, lost an average of 22.6% of their weight at 80 weeks while taking 12 mg of retatrutide. (This figure refers to participants who stayed on the medication as directed, rather than counting those who stopped or sought other treatments. This research also hasn’t been peer-reviewed or published yet.)
• In the TRIUMPH-4 study, participants with knee osteoarthritis who took the 12-mg dose of retatrutide lost an average of 23.7% of their body weight over 68 weeks. (This data hasn’t been published in a peer-reviewed journal yet, either.)

While we anticipate retatrutide being a strong option for many people seeking weight loss, it may be particularly useful for anyone who falls into one or more of these categories:

• You didn’t have a response to earlier GLP-1 drugs like Wegovy, Ozempic, Rybelsus, liraglutide, Zepbound, or Mounjaro.
• Your weight loss plateaued with other GLP-1s and you still haven’t met your target weight.
• You have a large percentage of body weight to lose (20% or more).

In addition to helping with weight loss, retatrutide is currently being studied as a possible treatment for type 2 diabetes, sleep apnea, and knee osteoarthritis, as well as a way to improve heart and kidney health.

Retatrutide is currently undergoing the clinical trials necessary for it to obtain FDA approval, so it's not yet available to be prescribed. But if you go online, you’ll find some pharmacies already selling retatrutide peptides, even though it’s technically not approved for use outside of clinical trials. 

Read on for more about what that means, how clinical trials work, who may qualify, and what to do if a trial isn’t right for you (spoiler alert: you have other options!).

What Is Retatrutide?

Similar to other GLP-1 medications, retatrutide is an injectable medication that targets hormone receptors in your body that directly impact metabolism and appetite. Specifically, retatrutide targets three different receptors: 

• GLP-1: helps regulate appetite and blood sugar
• GIP: supports insulin response
• Glucagon: affects energy use and fat metabolism

By targeting all three, the medication delays how fast your stomach digests food, lowers your appetite, and ultimately reduces how much food you eat. This can lead to numerous improvements in health, including: 

• weight loss
• improved glycemic control (aka how well your blood sugar is managed)
• lower blood pressure and cholesterol markers

But retatrutide does still carry the risk of side effects that most medications in this category have, most commonly gastrointestinal (GI) issues like: 

• nausea
• diarrhea
• constipation
• vomiting 

Side effects are typically mild to moderate, though, and most people can continue taking the medication. That said, in one recent clinical trial, 11.3% of people taking 12 mg of retatrutide stopped the drug because of the side effects. Discontinuation rates were lower at lower dosages and among people taking a placebo. (We’ll get into the side effects more later.)

While higher doses of retatrutide are linked to more weight loss, dosing is titrated up over time, just like with other injectables. When retatrutide does become available, we suspect the guidance will reflect the same “low and slow” approach to upping doses.

Is Retatrutide Legal? What About ‘Retatrutide Peptide’ Sold Online?

You may have seen retatrutide peptides or “reta” vials being sold online, but this is being done unlawfully. These peptides for weight loss may be labeled with things like "for research use only" or "not for human consumption" and are often shipped as a powder, but these loopholes are unlawful.

So, if your search history is filled with questions like “Is retatrutide FDA approved?,” let us clear up any confusion: No, retatrutide is not yet FDA approved and cannot be legally compounded or sold commercially.

In other words, there is no safe, legal retatrutide prescription you can get right now outside of a clinical trial. And it’s easy to see why these gray-market reta peptides should be avoided: There’s no way to know for sure what the vial actually contains, its dose, or how sterile it is. 

The FDA is trying to fight this by sending warning letters to retatrutide peptide sellers, but that hasn’t stopped them completely. Remember: The only legitimate way to try retatrutide now is through a clinical trial. 

If you want prescribable medication for weight loss now, stick to the FDA-approved options (which we cover below!).

When Will Retatrutide Be Available?

While there’s no firm date set yet, retatrutide’s manufacturer, Lilly, announced on July 23, 2026, that it plans to submit the drug to the FDA for approval in the first quarter of 2027. It can then take between 6 and 10 months for the FDA to review the research (although this timeline could vary). This means that the earliest retatrutide will be available is likely late 2027 or early 2028.

In addition to the exact availability date, a lot remains unknown about retatrutide coming to market. This includes what the brand name will be, how much it will cost, and which conditions it’s ultimately approved for (such as obesity, diabetes, sleep apnea, and/or knee osteoarthritis).

You don’t need to wait until 2027 or 2028 to start on weight loss medication, though. Plenty of retatrutide alternatives are available today that healthcare professionals like Midi clinicians can prescribe now (more on those in a minute).

How to Get Retatrutide With a Clinical Trial

The pivotal clinical trials on retatrutide (TRIUMPH-1 through TRIUMPH-4) have finished, so enrollment in clinical trials is now limited to smaller or follow-up studies. 

How to find clinical trials for retatrutide

Clinicaltrials.gov is one of the best places to look for clinical trials on retatrutide. The site is a longstanding, government-run database of human clinical trials that are happening worldwide. 

You’ll be able to find clinical trials at all different phases, including:

• new, not yet recruiting
• active, recruiting
• active, not recruiting
• completed

One thing to note: As of October 2026, the website listed only three retatrutide studies still looking for participants. And keep in mind that though the site is maintained by The National Library of Medicine, the government doesn’t review or approve the safety of all the clinical trials. 

That’s why it’s important to speak with a healthcare professional, like a Midi clinician, before applying to enroll in a study. This can help you make sure it’s a safe option for your wellness journey.   

You should also go over all medications you currently take with a clinician, such as glucose-lowering diabetes medications, blood pressure or thyroid medications, or anticoagulants. Retatrutide slows the emptying of your stomach, so it can affect how certain oral medications are absorbed.

To find out how to get retatrutide with a clinical trial, follow these steps:

Step 1: Search for active retatrutide trials

The best place to start is a reputable clinical trial registry, like clinicaltrials.gov. When searching, use terms like:

• “retatrutide”
• “retatrutide weight loss”
• “triple-agonist obesity trial”
• “investigational metabolic drug study”

From there, you’ll see a list of results. Filter for trials that are recruiting or enrolling. And keep an eye on ones that are not yet recruiting, as you may be a candidate for them in the future.

Step 2: Review the trial details carefully

Not surprisingly, criteria for clinical trials can be very specific. Before applying, you’ll want to take note of any of the following to make sure the study makes sense for you, your health history, and your lifestyle. Pay close attention to:

• inclusion and exclusion criteria
• location (some trials require in-person visits)
• frequency of check-ins
• study design, including whether the study is randomized and placebo-controlled (a placebo-controlled trial means not everyone receives the medication, which is an important consideration)
• study duration (if you’re in the placebo group, this is how long you’ll go without treatment, too!)

For instance, some retatrutide clinical trials are enrolling people with obesity only, which means you must be above a certain BMI to qualify. Other studies may be looking at retatrutide’s benefits beyond just weight, so they might need people with other health conditions, like metabolic dysfunction-associated steatotic liver disease.

Step 3: Apply and complete screening

If you want to sign up for a retatrutide trial, you’ll need to reach out to the sponsor listed on the trial. There’s usually contact information available. If you’re having trouble figuring out who to call or email, your current healthcare professional may be able to help you get enrolled. 

If you do apply, you’ll typically go through:

• a medical history review
• lab work and vital signs
• a consent process explaining risks and benefits

This is your opportunity to ask questions and decide whether participation feels right for you. 

Risks Associated With Participating in a Retatrutide Clinical Trial

The risks of participating in a retatrutide clinical trial are the same as for any clinical trial. Because the medication is still being studied, there will always be known and unknown risks. In current clinical trials, retatrutide side effects have been mild to moderate and most often included:

• nausea
• diarrhea
• vomiting
• constipation

As noted above, in many of these randomized trials, there is a chance that you’d be receiving a placebo, meaning no active drug at all. So, if you want to get moving on your goals as soon as possible, the risk of delaying other effective treatments until the duration of the study is completed may not be worth it. 

Other side effects included decreased appetite and dysesthesia (aka unusual skin sensations). Side effects happened more often when people went up in their dose or were at a higher dose—but even then, the impact tended to be in the mild to moderate range.

Before enrolling in a clinical trial, you’ll receive detailed information through an informed consent process, so you can weigh all the pros and cons of participating. Don’t be afraid to ask a lot of questions and get a second opinion on joining. 

Why Retatrutide May Help With Menopausal Weight Gain

For many women, weight gain is one of the most frustrating changes during perimenopause and menopause—especially as hormones shift and metabolism slows. As estrogen levels decline, women may burn 250 to 300 fewer calories per day, making weight gain easier and weight loss harder.

Menopause is also linked to increased belly fat (aka meno belly), which carries greater health risks. Lower estrogen, reduced activity over time, and menopause-related sleep disruption often work together to drive steady weight gain—about 1.5 pounds per year on average after menopause. 

Excess abdominal fat is associated with higher inflammation and increased risk of insulin resistance, high blood pressure, and cardiovascular disease, which is why many menopausal women consider GLP-1 medications as part of a broader, clinician-guided weight management plan.

Working with a healthcare professional who understands your hormone needs is important. Any approach to sustained weight loss should be multifaceted, encompassing various elements that contribute to your overall well-being. So while diet and exercise are important, so are steps like addressing hormones, reducing stress, and prioritizing sleep.

Retatrutide Alternatives for Weight Loss

If you don’t qualify for a retatrutide clinical trial or aren’t chosen to participate, that doesn’t mean you’re out of options. In fact, several evidence-based weight loss treatments are available right now, many with strong clinical data and real-world use behind them. For many people, these options can be effective and more accessible while newer medications like retatrutide are still being studied.

And for those doing well on a currently available GLP-1, there is no clinical reason to switch to retatrutide via a clinical trial right now. You also don’t need to enroll in a retatrutide clinical trial if you’re seeking more modest weight loss to optimize your health. Other GLP-1 drugs can do the trick. 

FDA-approved GLP-1 medications available now

Medications like semaglutide, tirzepatide, and orforglipron are already FDA approved and widely prescribed for weight loss and metabolic health. Research shows these medications can lead to roughly 11% to 21% average body weight loss over about 16 months, depending on the medication and dose. 

These medications work by:

• reducing appetite
• increasing feelings of fullness
• improving blood sugar regulation

Because the medications are FDA approved, clinicians have a much clearer understanding of appropriate dosing, common side effects, and long-term safety than they do with investigational drugs like retatrutide.  

Common FDA-approved GLP-1 medications include:

Semaglutide 

• Wegovy (FDA approved for weight loss and cardiovascular risk reduction)
• Ozempic (FDA approved to improve blood sugar and reduce cardiovascular risk in adults with type 2 diabetes)

Tirzepatide

• Zepbound (FDA approved for weight management and obstructive sleep apnea)
• Mounjaro (FDA approved to improve blood sugar and reduce cardiovascular risk in adults with type 2 diabetes)

Orforglipron

• Foundayo (FDA approved for weight loss)

These medications—available as injectables or oral tablets—are accessible today through a clinician and may be a strong option for people who don’t qualify for or don’t want to wait to get retatrutide via a clinical trial. 

While some of these medications may come with high price tags, many have less expensive vial and self-pay programs that can bring down the cost. Be honest with your healthcare professional about your budget and whether you have insurance, so they can guide you toward the right medication for your needs. (A Midi clinician can help determine the right option for your health, your goals, and your wallet.)

Non-GLP-1 evidence-based weight and metabolic treatments

Weight gain—especially in midlife—is rarely just about willpower. Hormones, insulin resistance, medications, sleep deprivation, stress, and muscle loss all play a role. Depending on your health history, a clinician may consider options like:

• Hormone therapy: Hormone replacement therapy (HRT, now commonly referred to as menopause hormone therapy, or MHT) is not a weight loss drug, but it can help you feel better by improving your sleep, mood, and joint pain. This, in turn, helps you stick with healthy habits that lead to weight loss, like exercising and eating well.
• Metformin: This prescription medication has a long and well-researched history of not only managing insulin resistance and age-related weight gain, but reducing inflammation, improving symptoms of menopause (such as fatigue), and has even been studied for promoting longevity. 
• Contrave: This non-GLP-1 medication works on appetite and reward pathways and has been shown to help quiet food noise.

Not everyone needs or tolerates a GLP-1. For many people, non-GLP-1 medications, alone or in combination, can produce meaningful, sustainable results when chosen thoughtfully with clinician guidance.

Holistic approaches

Medications work best when they’re paired with foundational care. Chronic sleep deprivation, unmanaged stress, and the wrong type of exercise for your body can actively block weight loss, even if you’re taking medication. Evidence shows that:

• Improving sleep can lower hunger hormones and cortisol.
• Stress management can reduce abdominal fat buildup.
• Strength training helps preserve muscle and boosts metabolic rate over time.

Targeted supplements may also play a supportive role, especially when they address common barriers to weight loss in midlife. For example, supplements that support sleep quality, stress response, blood sugar balance, or muscle health may help make weight loss efforts more effective and sustainable—particularly when used alongside clinician-guided treatment.

These approaches may not sound flashy, but they’re often what separates short-term weight loss from results that actually last. When the foundation is strong, medications and supplements are more likely to work the way they’re intended to.

The bottom line: Retatrutide looks like a promising tool for weight loss, but it’s not the only path forward for many people today. Working with a knowledgeable healthcare professional, like a Midi clinician, can help you find a safe, appropriate plan—even while new medications are still in development. 

At Midi, we regularly combine a range of complementary strategies for our patients to help them reach their weight loss and overall health goals. A clinician-guided Care Plan that combines proven medications, hormone support when appropriate, and lifestyle strategies tailored to your body can deliver real results.

Key Takeaways

• Retatrutide is an investigational weight loss drug showing strong results in trials, but it is not FDA approved yet. Its manufacturer is planning on submitting retatrutide to the FDA for approval at the beginning of 2027. So, at the earliest, it likely won’t be available until late 2027 or early 2028.
• In separate trials, retatrutide has shown even greater percentage weight loss than other GLP-1 medications and may be an option for those few who did not fully respond or have plateaued on their weight loss from other medications.
• Currently, the only safe and legal way to access retatrutide is through a clinical trial like those listed on clinicaltrials.gov. Any website or individual claiming to sell retatrutide outside of a trial is not doing so legally or in compliance with safety regulations.
• Sustainable weight loss often requires a personalized, multi-factor approach: Weight gain is influenced by hormones, insulin resistance, sleep, stress, and muscle loss—not just appetite. Combining medications (GLP-1 or non-GLP-1), hormone support when appropriate, and lifestyle strategies leads to better long-term results than any single solution alone.

Frequently Asked Questions (FAQs)

Are you guaranteed retatrutide in a clinical trial?

No, you’re not automatically guaranteed to get retatrutide in a clinical trial. Most trials are randomized and blinded, meaning some participants receive retatrutide, while others get a placebo that doesn’t include the active ingredients. In double-blind studies, neither you nor the study team knows which you’re receiving during the trial. This is essential for high-quality research, but it’s important to be comfortable with that uncertainty.

How can I get retatrutide today?

Retatrutide is not yet FDA approved. It is available through clinical trials only (although most are no longer enrolling). It cannot be prescribed by a clinician, dispensed by a pharmacy, or legally sold online. Any website or individual claiming to sell retatrutide peptides outside of a trial is not offering a lawfully procured product. Because these supplies bypass regulated pathways, there are no systematic guarantees regarding product quality or safety..

Retatrutide vs. Ozempic?

One drug isn’t inherently better than the other. Semaglutide (the active ingredient in Wegovy and Ozempic) targets a single potent pathway (the GLP-1 receptor), while retatrutide is a triple-agonist, acting on GLP-1, GIP, and glucagon receptors. These additional activity pathways may explain why early studies suggest greater average weight loss with retatrutide. (But the drugs haven’t been compared head to head yet.)

That said, Wegovy is FDA approved and widely prescribed for weight loss, with excellent clinical responses, while retatrutide is still an investigational drug available only through clinical trials, and its long-term safety and tolerability are still being studied.

Retatrutide vs. tirzepatide?

Retatrutide and tirzepatide are often compared because they represent the next wave of metabolic medications, but they’re not equally accessible. 

Tirzepatide is FDA approved (for diabetes and weight loss, depending on the drug) and works as a dual-agonist, targeting GLP-1 and GIP receptors to reduce appetite, improve insulin response, and support weight loss. 

Retatrutide, by contrast, is still investigational and available only through clinical trials. It goes one step further as a triple-agonist, targeting GLP-1, GIP, and glucagon receptors, which may enhance fat metabolism. Early trial data suggest retatrutide could lead to greater average weight loss than tirzepatide, but its long-term safety, side effects, and real-world tolerability are still being studied. These medications haven’t been compared in a head to head study, either.

How long does retatrutide take to kick in?

While it depends on the person and the dose, phase 2 clinical trials showed that 4 weeks after starting retatrutide, some people had already lost almost 5% of their body weight.  

How fast can you lose weight on retatrutide?

This also depends on how your body reacts to the medication, but phase 2 clinical trials showed that after 24 weeks (around 6 months), the average participant taking higher doses of retatrutide (12 mg) lost close to 18% of their body weight. And more recent findings show that participants taking the highest dose of retatrutide lost an average of 25% of their body weight over 80 weeks.

What if I only need to lose a small amount of weight?

The big advantage of retatrutide is the higher percentage body weight loss, so it's a promising option for people with severe obesity (meaning your BMI is greater than 40) or people with obesity who have lost some weight with current medications but whose weight loss has plateaued, and they’re seeking additional weight loss to achieve their best health. For those aiming for more modest amounts of weight loss, the currently available weight loss medications will likely do the job, and your choice can depend on factors like insurance coverage, your preferred formulation (an injection versus oral pill), and ease of access and use.  

Is retatrutide right for me? 

Early studies show retatrutide may be right for people seeking help with weight loss, but results from current clinical trials will give us all a better understanding of the drug’s nuances in terms of who may benefit the most. If you have not had a response to other weight loss medications or have plateaued in your weight loss, ask a healthcare professional whether seeking enrollment in a clinical trial for retatrutide may be a good option for you.

Is retatrutide legal in the USA? 

While it’s legal for people to take retatrutide as part of a clinical trial, it’s not legal to prescribe or sell retatrutide in other ways. It can be dangerous to buy online retatrutide peptides, as these are unregulated drugs, and there’s no way to know what you’re actually getting.

Can I get a prescription for retatrutide? 

At the moment, no, you can’t get a prescription for retatrutide (outside of a clinical trial). Once retatrutide is FDA approved (likely in late 2027 or early 2028 at the earliest), you will be able to get one, as long as you qualify for the medication. For now, healthcare professionals like Midi clinicians can prescribe other FDA-approved GLP-1s, such as Wegovy (semaglutide) and Zepbound (tirzepatide).

Who can get retatrutide? 

Since retatrutide is not FDA approved yet, there aren’t specifics about who can get a prescription. That said, when the drug is approved, its prescription requirements may be similar to other GLP-1s for weight loss: those who have obesity or who are overweight with another weight-related condition.

What is the cheapest GLP-1 drug I can buy without insurance?

Prices vary, depending on your insurance provider and what savings programs are in place, but at the moment, opting for a self-pay vial option or signing up for a savings plan through the manufacturer can help bring down your price.

How much will retatrutide cost? 

Until retatrutide is approved by the FDA and becomes available in pharmacies, it’s not known how much it will cost. It may be priced similarly to current FDA-approved GLP-1s, which can cost as low as $25 or as high as $1,000 or more for a month’s supply without insurance or savings plans.