There are currently five GLP-1 medications approved for weight loss: Zepbound (tirzepatide injection), Wegovy (semaglutide injection), Wegovy pill (oral semaglutide), Foundayo (orforglipron), and Saxenda (liraglutide). Based on clinical trial data, Zepbound produces the greatest average weight loss, followed by Wegovy injection, the Wegovy pill, and Foundayo.
Here's how they compare:
- Zepbound (injectable tirzepatide): Average weight loss of about 20% at 72 weeks, making it the top performer in head-to-head trials against semaglutide.
- Wegovy (injectable semaglutide): Average weight loss of around 15% at 68 weeks. A well-established injectable option with strong clinical evidence.
- Wegovy pill (oral semaglutide): Average weight loss of around 14% at 68 weeks, and requires strict fasting and water-only dosing conditions.
- Foundayo (oral orforglipron): Average weight loss of around 11% at 72 weeks. While it leads to slightly less weight loss than tirzepatide and semaglutide, it is the only GLP-1 pill with no food or water restrictions, making it the most convenient oral option.
- Saxenda (injectable liraglutide): Average weight loss of around 8% at 56 weeks. It is the least effective weight loss GLP-1 medication.
Keep in mind that results vary from person to person, and the most effective medication for you depends on your health history, goals, and lifestyle.



