Ozempic vs Wegovy vs Mounjaro vs Zepbound: Brand Names Explained
It’s less confusing than it looks. There are really just two active ingredients behind all these names. Semaglutide is sold as Ozempic (diabetes), Wegovy (weight loss), and Rybelsus (the oral pill). Tirzepatide is sold as Mounjaro (diabetes) and Zepbound (weight loss). Same molecule, different brand and approved use.
Compounded versions use the same active ingredients without the brand name, which is often why they cost less.
Two ingredients, many names
The marketing makes this seem complicated, but the biology is simple. Every one of these products is either semaglutide or tirzepatide. The different brand names mostly reflect which company makes it, which condition it was approved for, and sometimes the dose range. Once you know the active ingredient, the rest falls into place.
The semaglutide family
- Ozempic, semaglutide approved for type 2 diabetes, injected weekly. Widely used off-label for weight loss.
- Wegovy, semaglutide approved specifically for chronic weight management, at higher doses.
- Rybelsus, semaglutide in a daily oral pill, covered in our oral vs injectable guide.
The tirzepatide family
- Mounjaro, tirzepatide approved for type 2 diabetes, injected weekly.
- Zepbound, tirzepatide approved for weight management.
Tirzepatide works on two hormone receptors instead of one, which is why it often produces greater weight loss, as we explain in semaglutide vs tirzepatide.
Why the same drug has two brand names
Ozempic and Wegovy are the same molecule, so why two names? Largely approval and dosing. A drug approved for diabetes and later for weight management is often branded separately for each use, sometimes at different dose ranges. It’s a regulatory and marketing distinction more than a chemical one. The same logic explains Mounjaro versus Zepbound.
Where compounded fits
You’ll also see compounded semaglutide and tirzepatide, which use the same active ingredients prepared by compounding pharmacies rather than sold under a brand. This is often more affordable and accessible, with the honest caveat that compounded medications are not individually FDA-approved. We cover the legal picture in our guide to compounded semaglutide, and the cost angle in GLP-1 cost and insurance.
Skip the branding, get the medicine.
HermanRx connects you with licensed physicians who prescribe compounded semaglutide or tirzepatide, the same active ingredients behind the brand names, with oversight and discreet shipping.
Which one is right for you?
The practical question isn’t the brand, it’s the ingredient and your goals. Semaglutide is well-established and effective; tirzepatide often delivers greater loss. Diabetes-approved versus weight-approved matters mostly for insurance and prescribing, not for how the molecule works in your body. A provider matches the ingredient, dose, and format to you, whatever it’s called on the box. Providers like HermanRx handle that.
Ozempic, Wegovy, and Rybelsus are all semaglutide; Mounjaro and Zepbound are both tirzepatide. The brand differences come down to approved use and dosing, not chemistry. Compounded versions use the same ingredients without the brand. Focus on the active ingredient and your goals, not the marketing.
Frequently asked questions
Are Ozempic and Wegovy the same thing?
Yes, both are semaglutide. Ozempic is approved for diabetes and Wegovy for weight management, often at higher doses, but the active ingredient is identical.
What’s the difference between Mounjaro and Zepbound?
Both are tirzepatide. Mounjaro is approved for diabetes and Zepbound for weight management. Same molecule, different approved use.
Is compounded semaglutide the same drug?
It uses the same active ingredient, prepared by a compounding pharmacy rather than sold under a brand. It’s often cheaper but not individually FDA-approved.
Which brand is best for weight loss?
It’s about the ingredient, not the brand. Semaglutide is effective; tirzepatide often produces greater loss. A provider matches the right one to your goals.