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Evidence-based GLP-1 & peptide discussion since 2023
ForumsVerified VendorsGGPeps (GYC) tirzepatide — anyone have experience? Page 3

GGPeps (GYC) tirzepatide — anyone have experience?

KetoKyle Thu, Mar 7, 2024 at 1:29 PM 17 replies 2,171 viewsPage 3 of 4
DerekSJ_a1c
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Mar 14, 2024 at 9:43 PM#11
NurseLeah_Nash said:
The GIP arm is doing real work rather than padding the label.

Thank you for spelling out the reasoning rather than just the conclusion. Sending this to two other people who asked me the same thing last week.

Last edited: Mar 15, 2024 at 2:43 AM
47 20adam_van, Dr.SurgeonPGH, rachel_ABQ and 44 others
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JenPlateau
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Mar 16, 2024 at 1:59 AM#12

Clinical perspective, offered as context rather than as advice.

Dose-response modeling for tirzepatide: Emax model fitting to the STEP/SURMOUNT dose-finding data shows:

Semaglutide: ED50 ≈ 0.6mg, Emax ≈ -18%, Hill coefficient ≈ 1.3
Tirzepatide: ED50 ≈ 6mg, Emax ≈ -25%, Hill coefficient ≈ 1.5

Clinical implication: most patients achieve >80% of maximal response by the mid-range dose (1.7mg sema, 10mg tirz). Going to the maximum dose provides diminishing returns — possibly not worth the additional side effect burden for some patients. Individualize dosing based on response vs tolerability.

Last edited: Mar 16, 2024 at 7:59 AM
48 21TrialNerd_Beth, HPLC_Greg, LibrarianMeg and 45 others
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BenResearch_OR
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Mar 17, 2024 at 6:14 AM#13
Dr.PathRoch said:
Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion.

I disagree that testing history is decisive. It tells you what a supplier did when they were being watched. Continuity of behaviour under stress — a late shipment, a failed test, a complaint — is more predictive than any run of good results.

Last edited: Mar 17, 2024 at 7:14 AM
49 22Dr.NateNeph, PharmD_Rodriguez, julia.endo and 46 others
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HPLC_Greg
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Mar 18, 2024 at 10:29 AM#14

Adding the numbers, since they settle part of this. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.

Last edited: Mar 18, 2024 at 4:29 PM
50 23Dr.MetabolicMD, RetaRick_CA, JenPlateau and 47 others
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Admin
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Mar 19, 2024 at 2:43 PM#15

Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Carry on.

1 24PeptideSynthNJ
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