If you’ve been thinking about taking a GLP-1 medication for weight loss, you might be wondering which one is best to take. Two of the most popular GLP-1 medications are Ozempic and Zepbound. While both medications have shown impressive results for weight loss, they have some important differences in how they work, which conditions they’re approved for, and how much weight they can help you lose.

As a registered dietitian who works with clients navigating weight management options, I’ve seen firsthand how understanding these medications can help people make informed decisions. Let’s break down the key differences between Ozempic and Zepbound so you can better discuss options with your healthcare provider.

What’s the Difference Between Ozempic and Zepbound?

Ozempic® (Semaglutide)

Ozempic is the brand name for a medication containing semaglutide, which was initially FDA-approved for treating Type 2 diabetes. It belongs to a class of drugs called GLP-1 receptor agonists that mimic the hormone, glucagon-like peptide-1 (GLP-1), a hormone naturally released after eating. This leads to reduced appetite, increased fullness, increased insulin, and better blood sugar control.

Ozempic was primarily designed for managing blood sugar levels in people with type 2 diabetes, but it also helped people lose weight. In 2021, semaglutide was approved for weight loss under the brand name, Wegovy®, a higher-dose version of semaglutide specifically approved for weight management.

Ozempic is a once-weekly injection that you can self-administer. The dose starts at 0.25 milligrams (mg) per week for four weeks. After that, the dose is moved up to 0.5 mg per week for four weeks and then 1 mg per week for four weeks. The max dose is 2 mg per week if additional blood sugar control is needed.

Key facts about Ozempic:

• Primary FDA approval: Type 2 diabetes. FDA-approved in combination with diet and exercise to improve blood sugar control in adults with type 2 diabetes. May also reduce risk of cardiovascular disease in people with or without diabetes. 
• Active ingredient: Semaglutide
• Delivery method: Weekly subcutaneous injection (belly, thigh, or upper arm)
• Mechanism: GLP-1 receptor agonist (single-action)
• Weight loss potential: Clinical trials show an average weight loss of 15-17% of body weight after 68 weeks when combined with lifestyle changes.

Zepbound® (Tirzepatide)

Zepbound contains tirzepatide and was FDA-approved specifically for weight management in November 2023. Tirzepatide is also sold under the brand name, Mounjaro®, which was initially approved for Type 2 diabetes in May 2022.

What makes Zepbound unique is that it’s a dual-action medication that targets both GLP-1 and GIP (glucose-dependent insulinotropic polypeptide) receptors, whereas Ozempic is single-action, only targeting GLP-1. GIP and GLP-1 are both naturally released after eating and help reduce appetite and hunger.

Zepbound is also a once-weekly injection that you can self-administer. The starting dose is 2.5 mg for four weeks, then it increases to 5 mg per week for four weeks, 7.5 mg per week for four weeks, 10 mg per week for four weeks, 12.5 mg per week for four weeks, and it maxes out at 15 mg per week for four weeks. The recommended maintenance doses are 5 mg, 10 mg, or 15 mg, but you should work with your healthcare provider to determine the best dose for you.  

 Key facts about Zepbound:

• Primary FDA approval: Weight management. FDA-approved for weight management in adults with obesity (BMI ≥30) or overweight (BMI ≥27) with at least one weight-related condition (e.g. high blood pressure, type 2 diabetes, or high cholesterol) in addition to a reduced calorie diet and exercise.  
• Active ingredient: Tirzepatide
• Delivery method: Weekly subcutaneous injection (belly, thigh, or upper arm)
• Mechanism: GLP-1 and GIP receptor agonist (dual-action)
• Weight loss potential: Clinical trials show an average weight loss of 16-22.5% of body weight after 72 weeks when combined with lifestyle changes, making it the most effective FDA-approved medication for weight loss to date.

Ozempic vs. Zepbound: Which is Better for Weight Loss?

When it comes to weight loss results, clinical trials have shown Zepbound to lead to greater weight loss than Ozempic.

Ozempic (Semaglutide):

• Average weight loss: 15-20% of body weight
• In clinical trials, participants lost approximately 15% of their body weight after 68 weeks

Zepbound (Tirzepatide):

• Average weight loss: 20-25% of body weight
• In the SURMOUNT-1 trial, participants lost approximately 22.5% of their body weight at the highest dose after 72 weeks

Research suggests that Zepbound may offer slightly greater weight loss results, likely due to its dual-action mechanism that targets both GLP-1 and GIP receptors. However, individual results vary significantly, and what works best depends on your unique physiology.

Ozempic v.s. Zepbound: How Do They Compare?

FDA Approvals and Intended Use

One important distinction between these medications lies in their FDA-approved uses:

Ozempic is approved for treating Type 2 diabetes, so if you don’t have diabetes but are trying to lose weight, your doctor will most likely prescribe Wegovy or Zepbound, which are approved for weight management. Both Ozempic and Wegovy contain semaglutide – the difference is that Ozempic is approved for type 2 diabetes and Wegovy is approved for weight loss.

Some providers prescribe Ozempic “off label,” which means they are prescribing an FDA-approved drug (Ozempic) but not for the condition it was FDA-approved for (diabetes). In this case, they’d be prescribing a drug that’s approved for diabetes for weight loss. Providers may do this if they believe Ozempic is the better option for you or other options have not been successful. 

Unlike Ozempic, Zepbound is specifically approved for chronic weight management in adults with obesity or who are overweight with at least one weight-related condition (e.g. high cholesterol, high blood pressure). The same active ingredient (tirzepatide) is marketed as Mounjaro for Type 2 diabetes. 

Zepbound is intended to be used for weight loss, and studies show it leads to greater weight loss than Ozempic, so if you do not have diabetes, it is likely your provider will prescribe Zepbound. 

Side Effects and Tolerability

Both medications have similar side effect profiles, though the intensity and frequency can differ:

Common side effects for both medications:

• Nausea (most common)
• Vomiting
• Diarrhea
• Constipation
• Abdominal pain
• Decreased appetite

Typically these side effects occur when someone starts taking the medication for the first time, but they tend to decrease over time as the body adjusts to the medication. The gradual dose increase every 4 weeks, which is recommended for both Ozempic and Zepbound, helps minimize side effects.

Cost and Insurance Coverage

Cost can be a significant factor when choosing between these medications:

Ozempic:

• Generally costs between $900-$1,300 per month without insurance
• More likely to be covered by insurance for diabetes treatment
• May have less coverage for weight management (off-label use)

Zepbound:

• Generally costs between $1,000-$1,400 per month without insurance
• May have better coverage specifically for weight management, since it is FDA-approved for this purpose
• Coverage varies widely by insurance provider

Before starting either medication, it’s essential to check with your insurance provider about coverage and potential out-of-pocket costs. Insurance coverage for these medications went down from 2024 to 2025, and some health insurance companies have announced they will stop covering these medications altogether. 

For example, Blue Cross Blue Shield of Massachusetts, announced that effective January 2026, they will stop covering Wegovy, Saxenda, and Zepbound for weight loss, but will continue to cover medications for type 2 diabetes, such as Ozempic.

Who’s a Good Candidate for These Medications?

Both Ozempic and Zepbound are generally recommended for:

• Adults with a BMI of 30 or higher (obesity), or
• Adults with a BMI of 27 or higher who also have at least one weight-related condition like high blood pressure, Type 2 diabetes, or high cholesterol

However, there are some differences in who might be better suited for each medication:

Ozempic might be better for:

• People who have both Type 2 diabetes and want to lose weight
• Those who might have better insurance coverage for diabetes medications

Zepbound might be better for:

• People specifically looking for weight management without diabetes
• Those seeking potentially more significant weight loss results
• Individuals whose insurance covers weight management medications

Beyond Medications: A Holistic Approach to Weight Management

GLP-1 medications like Ozempic and Zepbound have been life-changing for so many individuals. Obesity does not just mean that someone has more body fat but that the body fat has led to metabolic changes that make it more difficult to lose weight and keep it off. 

Simply “eating less and moving more” will not work for these individuals long-term. For example, individuals with obesity often have leptin resistance, which means the brain doesn’t get the signal that it has enough energy, leading to increased hunger, despite extra fat in the body. Trying to eat less won’t solve this problem because it will increase appetite even more, making it an unsustainable approach long-term. This is why GLP-1 medications, like Ozempic and Zepbound, are such an incredible intervention.  

However, while GLP-1 medications are one tool in the weight loss toolbox, they work best in conjunction with changes in diet and exercise.

Here’s what I recommend to my clients taking GLP-1 medications (and honestly all of my weight loss clients):

1. Focus on Protein and Fiber

These medications reduce appetite, which is why they work so wonderfully for weight loss. However, since you’re eating less, it’s important to make sure you’re getting the most bang-for-your-buck when it comes to nutrition so that you aren’t under-fueled. Prioritize protein-rich foods with every meal, and include plenty of fiber from vegetables, fruits, and whole grains.

2. Stay Hydrated

Both medications can cause nausea and digestive issues, which may be exacerbated by dehydration. Aim for at least 64 ounces of water daily, but ideally closer to 90-100 ounces of water per day.

3. Incorporate Strength Training

As you lose weight, some of that loss may come from muscle mass. When you lose muscle, your metabolism slows. Not only that, you become weak, and daily activities may become more difficult as you age. Regular strength training (2-4 times per week) helps preserve muscle and supports your metabolism.

4. Work with a Healthcare Team

The most successful outcomes involve a team approach—your doctor managing your medication and a registered dietitian helping you optimize your nutrition and behaviors for long-term success. Working with a therapist or counselor can help you if you struggle with stress or emotional eating. A personal trainer can help you build a strength training routine.

5. Plan for the Long Term

These medications are meant to be used long-term. Like any weight loss intervention, it will work as long as you keep doing it. If you stop taking a GLP-1 medication, weight regain is common. A 2022 study showed that one year after stopping weekly injections of Ozempic, along with lifestyle changes, participants regained two thirds of the weight they lost. However, you can regain less weight by making lifestyle changes while taking the medication. Whether you plan to stay on them long-term or not, work with your healthcare providers to develop a sustainable eating and exercise plan.

FAQs About Ozempic v.s. Zepbound

Can I take Ozempic or Zepbound if I don’t have diabetes?

Zepbound is FDA-approved specifically for weight management in people with obesity or overweight with weight-related conditions, regardless of diabetes status. Ozempic is approved for diabetes, though it may be prescribed off-label for weight management.

How quickly will I see results with these medications?

Most people begin to notice weight loss within the first month, but significant results typically take 3-6 months of consistent use alongside healthy diet and exercise habits.

Will my insurance cover these medications?

Coverage varies widely depending on your insurance plan and whether you’re using the medication for its FDA-approved purpose. Check with your insurance provider about specific coverage details. 

What happens if I stop taking Ozempic or Zepbound?

Most people experience weight regain after stopping either medication. These are considered long-term treatments for chronic conditions rather than short-term solutions.

Can I get these medications without a prescription?

No. Both Ozempic and Zepbound require a prescription from a licensed healthcare provider. Be wary of websites or sources claiming to offer these medications without a prescription.

Remember, while these medications can be powerful tools for weight management, they work best as part of a comprehensive approach that includes nutritional changes, physical activity, and behavioral strategies for long-term success.

The Bottom Line: Ozempic v.s. Zepbound

Both Ozempic and Zepbound represent significant advancements in medical weight management. 

When comparing the two:

• Zepbound is approved for weight management and may offer slightly greater weight loss results due to its dual-action approach
• Ozempic is approved for type 2 diabetes but can help with weight loss too. Studies show that Ozempic doesn’t lead to as much weight lost as Zepbound
• Both medications have similar side effect profiles, though individual experiences vary
• Insurance coverage and cost may ultimately be deciding factors for many people

Remember that what works best depends on your individual health history, current medications, insurance coverage, and personal health goals.

As with any medical decision, these medications should be discussed thoroughly with your healthcare provider. They’re not appropriate for everyone, and your doctor is best positioned to help you weigh the potential benefits against the risks for your specific situation.

Both medications work best in conjunction with lifestyle changes, such as eating more protein and fiber and getting regular exercise. Ready to focus on the habits that move the needle the most for weight loss?

Get started today with our FREE TRAINING → Why Your Weight Won’t Budge: 4 Mistakes Working Moms Make and How to Fix Them For Results That Last.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider before starting or changing any medication.