How do GLP-1 medication side effects compare between different brands?

While all GLP-1 medications share similar side effect profiles due to their mechanism of action, there are some differences in frequency and severity. Semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) tend to have higher rates of GI side effects compared to older GLP-1s like liraglutide (Victoza, Saxenda) or dulaglutide (Trulicity).

Tirzepatide, which also activates GIP receptors in addition to GLP-1 receptors, may cause slightly more GI side effects than semaglutide alone, but also produces greater weight loss. Exenatide (Byetta, Bydureon) has a shorter half-life and may cause more injection site reactions. Individual responses vary significantly, and what causes severe side effects in one person may be well-tolerated by another. If you're struggling with side effects on one GLP-1 medication, your healthcare provider may suggest trying a different one.