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ForumsRetatrutide & Triple AgonistsRetatrutide vs tirzepatide — need advice Page 3

Retatrutide vs tirzepatide — need advice

Dr.Martinez Sat, Mar 14, 2026 at 9:12 PM 33 replies 1,276 viewsPage 3 of 7
Dr.GutHealth
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Mar 15, 2026 at 5:56 AM#11
Dr.PathRoch said:
SURMOUNT-1 landed around 20.9% mean weight loss at 15mg over 72 weeks, against roughly 15% for semaglutide 2.4mg in STEP 1.

No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.

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andrew_nyc
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Mar 15, 2026 at 10:08 AM#12
CryptoCarl said:
The phase 2 numbers were about 24% mean weight loss at 48 weeks on the top dose, with the curve still descending at the end of the study.

Bookmarking. The distinction being drawn above is the one nobody else makes. Sending this to two other people who asked me the same thing last week.

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nancy_portland
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Mar 15, 2026 at 2:20 PM#13
Dr.PathRoch said:
SURMOUNT-1 landed around 20.9% mean weight loss at 15mg over 72 weeks, against roughly 15% for semaglutide 2.4mg in STEP 1.

Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. The "tirzepatide is simply better" summary irritates me. It is better on mean weight loss, and the cardiovascular outcome evidence is far thinner than semaglutide's. If the reason for treating is cardiovascular risk rather than weight, the evidence base points the other way.

Ask again with the specifics and you will get a better answer than this one.

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BiostatsBrad
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Mar 15, 2026 at 6:32 PM#14

Adding the numbers, since they settle part of this. Worth stating the units and the reference range whenever you post a number here. A large fraction of the apparent disagreement in these threads is two people using different units and both being right.

Worth separating that from tirzepatide, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

Ask again with the specifics and you will get a better answer than this one.

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mike_mod
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Mar 15, 2026 at 10:44 PM#15

Moderator note: two posts asking for a source have been merged into one. Please search the thread before asking again. Thread quality here is what the rules are for. Keep it up.

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