Tirzepatide vs. semaglutide — switched after 3 months
Was on semaglutide 1mg for 3 months. Good results (lost 18 lbs) but the nausea was brutal and never really went away. My doctor suggested switching to tirzepatide since it has a different mechanism (dual GIP/GLP-1 vs. GLP-1 only). Been on tirzepatide 5mg for 6 weeks now and the difference is night and day. Similar appetite suppression but way less nausea. I actually feel like eating occasionally which sounds weird but on semaglutide I basically had to force myself to eat anything. Down another 8 lbs since switching. Anyone else make this switch? Curious about longer-term experiences.
Replies (2)
The GIP component in tirzepatide is thought to be why some patients tolerate it better. GIP receptor activation has less direct nausea signaling than GLP-1 alone. The SURMOUNT trials showed tirzepatide achieved greater weight loss than semaglutide at comparable doses (SURPASS-2 head-to-head trial showed this directly), with similar or lower rates of GI side effects. That said, individual variation is huge. Some patients do better on semaglutide. The dual agonist approach isn't universally superior — it's about finding what works for your biology.
Made the same switch for the same reason. Semaglutide made me feel like I had a permanent stomach flu. Tirzepatide has been so much easier. I'm at 10mg now and still tolerating it well. The one thing I'll say is that tirzepatide hits my blood sugar harder — I actually had a couple mild hypoglycemic episodes early on that I never had with sema. Worth mentioning to your doc if you're not diabetic.