Best GLP-1 for Weight Loss: Ozempic, Wegovy, Mounjaro, Zepbound Compared

Compare the best GLP-1 medications for weight loss. Learn which drug works best, average weight loss, costs, side effects, and how to get a prescription online.

July 25, 2026Healthy-Weight Editorial13 min read

Medically reviewed by Dr. Sarah Chen, MD

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Quick answer:

The best GLP-1 for weight loss is Zepbound (tirzepatide), producing 20-22% average body weight loss, followed by Wegovy (semaglutide) at ~15%. Zepbound is FDA-approved for weight loss and available from $299/month via LillyDirect. Wegovy is the most established option, available as a pill from $149/month.

What is the best GLP-1 for weight loss?

The best GLP-1 for weight loss depends on your goals, health, side effect tolerance, budget, and insurance coverage. The most commonly used options in 2026 are:

Wegovy (semaglutide 2.4 mg)
Zepbound (tirzepatide)
Mounjaro (tirzepatide, off-label)
Ozempic (semaglutide, off-label)
Rybelsus (oral semaglutide)
Saxenda (liraglutide, daily)

Currently, clinical trials show that tirzepatide-based medications produce the most weight loss, while semaglutide is the most established option.

GLP-1 weight loss comparison

Medication	Active drug	Average weight loss	Dosing
Zepbound	Tirzepatide	~20-22%	Weekly injection
Mounjaro	Tirzepatide	~15-20%	Weekly injection
Wegovy	Semaglutide	~15%	Weekly injection
Ozempic	Semaglutide	~10-15%	Weekly injection
Rybelsus	Oral semaglutide	~6-10%	Daily pill
Saxenda	Liraglutide	~8%	Daily injection

Best GLP-1 for maximum weight loss

For maximum weight loss, Zepbound is the strongest option based on clinical data. In the SURMOUNT-1 trial, patients lost up to 22.5% of their body weight at the highest dose. In the head-to-head SURMOUNT-5 trial, tirzepatide beat semaglutide for weight loss.

Best GLP-1 for beginners

Wegovy is often a good starting point. It is FDA-approved for chronic weight management, widely available, and has strong long-term safety data. Many providers start with semaglutide before moving to tirzepatide if more weight loss is needed.

Best oral GLP-1 for weight loss

Rybelsus is the main oral option, but it is FDA-approved for type 2 diabetes and produces less weight loss than injections. Some patients prefer it if they are afraid of needles. New oral weight-loss GLP-1 options may become available in 2026.

Best GLP-1 if you have diabetes

If you have type 2 diabetes, Ozempic or Mounjaro may be the best choice because they are FDA-approved for diabetes and often covered by insurance. Mounjaro generally produces more weight loss than Ozempic.

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Cost comparison

Monthly costs vary widely based on insurance and manufacturer programs:

Wegovy: ~$1,350 list price; savings programs may reduce cost
Zepbound: ~$1,060 list price; vial programs from $299-$549
Ozempic: ~$950-$1,100 list price
Mounjaro: ~$1,070 list price
Rybelsus: ~$950+ list price
Saxenda: ~$1,350 list price

Compounded semaglutide and tirzepatide may cost $200-$450 per month but their legal status varies. A telehealth provider can explain current options.

Side effect comparison

All GLP-1 medications share similar digestive side effects:

Nausea
Diarrhea or constipation
Vomiting
Stomach pain
Reduced appetite

Tirzepatide appears to cause slightly more weight loss but may also cause more nausea in some patients. Injection-site irritation is more common with tirzepatide. Individual tolerance varies.

Which GLP-1 is right for you?

The right medication depends on:

How much weight you want to lose
Whether you have type 2 diabetes
Your insurance coverage
Your budget
Your tolerance for injections
Your medical history

Frequently asked questions

What is the strongest GLP-1 for weight loss?

Tirzepatide (Zepbound, Mounjaro) has shown the highest average weight loss in clinical trials.

Is Ozempic or Wegovy better for weight loss?

Wegovy is FDA-approved specifically for weight loss and reaches a higher dose. Ozempic is approved for diabetes and often used off-label for weight loss.

Is Mounjaro better than Wegovy?

Mounjaro contains tirzepatide, which produced more weight loss than semaglutide in head-to-head studies. However, Mounjaro is FDA-approved for diabetes, not weight loss.

What is the cheapest GLP-1 for weight loss?

Compounded options are often cheapest but legal status varies. Among brand-name drugs, Zepbound vial programs may offer lower cash pricing.

Can I switch from one GLP-1 to another?

Yes, but only under medical supervision. Your provider can help you transition safely and manage side effects.

Related guides

Conclusion

The best GLP-1 for weight loss depends on your individual situation. Zepbound and Mounjaro offer the strongest weight loss results. Wegovy is the most established FDA-approved option. Ozempic and Rybelsus may be better for people with diabetes or needle anxiety. Saxenda is an older option with less weight loss.

The best way to choose is to speak with a provider who can review your health, insurance, and goals. Check your eligibility for a US telehealth GLP-1 program and get a personalized recommendation with home delivery.

Related GLP-1 guides

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"I tried everything — keto, intermittent fasting, gym memberships. Nothing worked long-term. GLP-1 changed everything. I lost 47 pounds in 8 months and finally feel like myself again. The online process was so easy — I had my prescription in 2 days."

Jessica M., 38

Texas

-47 lbs

in 8 months

Compounded semaglutide

"At 52, my doctor said I was heading toward diabetes. I started tirzepatide through a telehealth program and lost 62 pounds. My A1C is back to normal, my blood pressure dropped, and I'm off two medications. Wish I'd done this years ago."

David R., 52

Florida

-62 lbs

in 11 months

Tirzepatide (Zepbound)

"I was skeptical about doing this online, but the whole process was professional and easy. My provider answered all my questions, and the medication arrived in 4 days. I've lost 38 pounds and finally have energy to play with my kids again."

Aisha K., 34

California

-38 lbs

in 6 months

Compounded semaglutide

Results vary. These testimonials reflect individual experiences and are not typical. Weight loss depends on diet, activity, and adherence to medication.

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