Why does the same GLP-1 show up under several brand names?
Updated: 2026-09-09 · GLP-1 and weight
Short answer
The active ingredient is the molecule — semaglutide or tirzepatide, for example. The brand is the commercial name a manufacturer gives one specific product. The same molecule can be sold under different brands, with different presentations and different approved uses.
In plain English
- Semaglutide and tirzepatide are active-ingredient names, not brands.
- A brand identifies a product: molecule, dosage form, strength and approved use.
- Mixing up brand and molecule leads to comparing products that are not equivalent.
- A powder labelled only with a molecule name is not an approved medicine.
What we know
- Public drug registers let you search by active ingredient and by brand.
- Approved products carry both names on the packaging.
What we don't know yet
- Equivalence between presentations cannot be assumed without checking the specific product.
- Names used in unregulated channels correspond to no approval at all.
Informational content about naming. It is not usage guidance or a product recommendation.
Sources
External links to official sources or peer-reviewed studies.