01
Class 01
GLP-1 Agonists
The original class. Still widely prescribed.
GLP-1 (glucagon-like peptide-1) is a hormone released in the gut after eating. It signals the pancreas to release insulin, slows digestion, and reduces appetite. GLP-1 agonist medications mimic this effect.
Originally developed for type 2 diabetes management, GLP-1 medications gained mainstream attention when significant weight loss emerged as a consistent side effect. FDA approvals for weight management followed.
Key medications
- Semaglutide — sold as Ozempic (diabetes), Wegovy (weight management), and Rybelsus (oral)
- Liraglutide — sold as Victoza (diabetes) and Saxenda (weight management)
- Dulaglutide — sold as Trulicity (diabetes)
How it's typically used
Weekly or daily injection, or daily oral tablet. Programs are usually delivered via telehealth platform or clinic, with ongoing clinician oversight.

