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ForumsDosing & ProtocolsHalf-life implications for missed doses — looking for input Page 2

Half-life implications for missed doses — looking for input

MeganSA_TX Thu, Jan 9, 2025 at 1:11 AM 9 replies 1,669 viewsPage 2 of 2
quinn_sf
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Jan 9, 2025 at 4:18 PM#6

Adding the numbers, since they settle part of this. Numbers worth memorising for this class: Tmax one to three days for the weekly peptides, terminal half-life about a week for semaglutide and about five days for tirzepatide, steady state at four to five half-lives, subcutaneous bioavailability high enough that site choice is irrelevant.

45 15tane_welly, Dr.PathRoch, mona_PHX and 42 others
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FranDenver
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Oct 2024
Denver, CO
Jan 9, 2025 at 10:17 PM#7

One thing that is still open after Dr.PulmRoch’s answer:

Which effects tachyphylax and which persist, because the answer explains why tolerability improves while the appetite effect keeps working?

44 14LipidDoc_ATL, BariatricNurseD, MASHdoc_SA and 41 others
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traveltech_sara
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Jan 2025
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Jan 10, 2025 at 4:16 AM#8
quinn_sf said:
Numbers worth memorising for this class: Tmax one to three days for the weekly peptides, terminal half-life about a week for semaglutide and about…

Coming at quinn_sf’s question from a different direction. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.

43 13wanda_boise, NurseAsh_DET, BenResearch_OR and 40 others
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MeganSA_TX
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San Antonio, TX
Jan 10, 2025 at 10:15 AM#9

Reporting back.

Closing this out: the trough rather than the peak explains the pattern I was seeing on day six, which I had been blaming on the vial.

42 12TomFromTexas, mike.trainer_LA, sarah_nash92 and 39 others
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Dr.DermMIA
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May 2024
Miami, FL
Jan 11, 2025 at 3:01 PM#10
traveltech_sara said:
The version of this that has an answer is narrower than the version being asked.

Fair, and it stops being fair at the extremes. The middle of the range is well understood; the ends are where the honest answer is that nobody knows.

2 0SurmountFan_IN, PeptideChemSF
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