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ForumsDosing & ProtocolsPK/PD modeling for tirzepatide — anyone have experience? Page 3

PK/PD modeling for tirzepatide — anyone have experience?

CryptoCarl Sat, Jan 10, 2026 at 5:27 AM 24 replies 1,368 viewsPage 3 of 5
TrialTracker_MD
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Jan 12, 2026 at 6:54 PM#11
Dr.RheumBOS said:
The pharmacokinetics explain nearly every practical question asked here.

Agreed, and the adaptation point cuts both ways: tachyphylaxis to gastric emptying is why tolerability improves, and it is also why people who were relying on physical fullness feel the effect fade while the appetite effect is still working.

19 17Dr.EM_Chicago, pete_RVA, CarlaRPh_TPA and 16 others
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AmyNC_wife
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Jan 14, 2026 at 5:00 AM#12
KristenIndy said:
Agreed on the mechanism, with the caveat that the head-to-head used semaglutide 1mg, not 2.4mg.

That reframing is the part I needed. I will report back once I have actually tried it.

20 18julia.endo, JessicaM_2024, TomFromTexas and 17 others
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PharmacoVig_BOS
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Jan 15, 2026 at 3:06 PM#13
Dr.RheumBOS said:
The pharmacokinetics explain nearly every practical question asked here.

I read this differently. The confidence in this thread is running ahead of the evidence, and I would rather the uncertainty were stated than smoothed over because it is unsatisfying.

21 19DataDave, Dr.GutHealth, amsterdam_pete and 18 others
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DanielChem_CHI
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Jan 17, 2026 at 1:11 AM#14

The figures, for anyone assembling their own picture. Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a trend.

22 20ben_calgary, patPC_UT, Dr.DermMIA and 19 others
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mike_mod
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Jan 18, 2026 at 11:15 AM#15

Moderator note: the sourcing question belongs in the vendor section and has been split out.

Last edited: Jan 18, 2026 at 1:15 PM
23 21PurityPaulOR, MaxMetOK, MounjBrad and 20 others
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