Semaglutide vs Tirzepatide

Community comparisons of semaglutide (Ozempic/Wegovy) and tirzepatide (Mounjaro/Zepbound) — switching, stacking, and head-to-head GLP-1 experiences.

3 anonymous reports

I did 11 weeks of Reta, starting dose 0.5 mg and titrated up to 2.0 mg. Tolerance was great at first and did lose weight but started suffering low blood sugar, extreme anxiety and heart palpitations, dry eyes and blurred vision. Switched to Tirz and anxiety has subsided as well as blurred vision and dizziness. I think the glucagon receptor was too much for me.

#062
TirzepatideRetatrutide

Semaglutide gave me the worst hair loss of my life :( Lost a third of my hair density in 5 months. Dr said it was the rapid weight loss, not the drug but switched to tirzepatide at a slower titration and my hair kinda grew back so idk

#043
TirzepatideSemaglutide

Switched from tirzepatide to retatrutide expecting magic. Got the same weight loss but my resting heart rate climbed from 62 to 84 and stayed there for 3 months. Reta is not tirz plus. It's a different beast and nobody talks about the cardiovascular load.

#042
TirzepatideRetatrutide

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Community Q&A

What is the difference between semaglutide and tirzepatide?
Semaglutide activates GLP-1 receptors only. Tirzepatide adds GIP receptor activation — a dual mechanism community accounts frequently describe as producing stronger weight loss with a different side effect profile. The most consistent theme in comparison confessions: tirzepatide causes less nausea for users who struggled on semaglutide, while producing greater total weight loss at equivalent dose stages.
Is tirzepatide better than semaglutide for weight loss?
Community accounts that compare both compounds favour tirzepatide for total weight loss, with many describing a 5–10 lb advantage over the same timeline. A subset of reports describe better tolerability on semaglutide, particularly those sensitive to GIP-related side effects. Both produce meaningful results — the switching accounts lean tirzepatide, but the tolerability accounts are split.
What happens when you switch from semaglutide to tirzepatide?
Switching accounts describe a transition period of 2–4 weeks where the new drug 'takes over.' Most describe improved weight loss momentum after the switch. A recurring theme: starting tirzepatide at a lower dose than the semaglutide dose being discontinued, then escalating. Accounts that switch without a tapering period describe more side effects in the transition weeks.
Which has fewer side effects — semaglutide or tirzepatide?
Community accounts are split, with the answer depending on which specific side effects matter to the user. For nausea and GI distress, tirzepatide is more frequently described as better tolerated — a finding attributed to the GIP component dampening the GLP-1-driven nausea response. For appetite suppression intensity, tirzepatide accounts more often describe aggressive appetite reduction that some users find uncomfortable. Semaglutide accounts dominate the 'easier to manage early on' framing. The practical community summary: tirzepatide tends to have less nausea but stronger appetite suppression; semaglutide has more nausea but a gentler overall experience for users sensitive to appetite changes.
Semaglutide vs Tirzepatide: Anonymous Reports — Peptide Confessions