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ForumsPharmacology & MechanismsGlucagon receptor signaling — anyone have experience? Page 2

Glucagon receptor signaling — anyone have experience?

AmyNC_wife Fri, Jul 11, 2025 at 11:23 PM 50 replies 2,366 viewsPage 2 of 10
DanielChem_CHI
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Jul 12, 2025 at 10:14 PM#6
Dr.RenalNash said:
The mechanism is more central than most summaries suggest.

I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

44 14fiona_VT, denise_HTX, raj_cambridge and 41 others
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HPLC_Greg
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Jul 13, 2025 at 7:21 AM#7

The figures, for anyone assembling their own picture. 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.

Happy to go further on any of that.

Last edited: Jul 13, 2025 at 1:21 PM
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Dr.PulmRoch
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Jul 13, 2025 at 4:28 PM#8
DanielChem_CHI said:
The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

There is a second half to this that has not been said yet. It helps to say which part of this you are uncertain about. A precise question gets a precise answer; a general one gets everybody’s favourite anecdote.

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

42 12AttorneyGrant, DebRD_ATL, KristenIndy and 39 others
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mark_tokyo
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Jul 14, 2025 at 1:36 AM#9

Following on from nick_newbie — and this may be the naive question:

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

41 11HPLC_Greg, LibrarianMeg, bri_stats and 38 others
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AmyNC_wife
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Jul 15, 2025 at 9:24 PM#10

OP back with an update, since a thread like this is useless without one.

Update — tachyphylaxis to the gastric effect, persistence of the appetite effect. Two curves, and I had been watching the wrong one.

33 6Dr.KarenChen, Dr.NateNeph, PharmD_Rodriguez and 30 others
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