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c/glp1science·posted 9 months ago by u/yannick_barros

20 months in and half-life is still the thing I get wrong

Needs Source Clean Column ×4 Slow Clap ×3 Long Haul ×2

gastric emptying. That is the whole post, but I will justify it.

Everything else people worry about in c/intlshipping is downstream of it. Titration speed, reflux, the endless dose arguments — most of it resolves if you sort gastric emptying out first, and almost nobody does.

I say this having got it wrong for 12 months. My ApoB was the thing that eventually made me pay attention, which is a stupid way to learn a lesson that was in the sidebar the whole time.

4,636 up / 1,624 down74% upvoted33 commentsid y7fo2s30 Oct 2025

33 comments

30 in this archive, depth 6

best — the order this archive was captured in

u/nhs_waitlist_nUK198 points·9 months ago

Sceptical. If this were true we would see it reflected in the data and we do not.

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u/yannick_barrosOP72 points·9 months ago

cite the paper: journal, year, first author, links optional

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u/marisol_kravchenko-3 points·9 months ago
more of this energy please
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u/aa_analysis_andy1 point·9 months ago

Yeah, the incretin mechanism is doing the work here.

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u/nadia_fonseca1 point·9 months ago

more of this energy please

Adding to this: half-life is doing more work than the comment implies.

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u/the_poster_in_question_2026111 points·9 months ago

Disagree. What you are describing is consistent with incretin, not with what you concluded.

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u/yannick_barrosOP48 points·9 months ago

The half-life is 23 hours, which means week 23 is genuinely still ramp-up. Week 38 is steady state.

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u/yannick_barrosOP26 points·9 months ago

Not convinced. The evidence does not support that reading.

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u/dose_creep_dan17 points·9 months ago

mechanistic speculation is welcome if flaired as speculation

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[deleted]52 points·9 months ago

[deleted]

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u/whois_wanda16 points·9 months ago

Yeah, the incretin mechanism is doing the work here.

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u/wholesome_lurker0 points·9 months ago

glucagon-receptor contribution is gastric emptying for dual and triple agonism

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u/isabela_nilsen1 point·9 months ago

the half-life is gastric emptying, affects steady state timing

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u/anders_kuusela1 point·9 months ago

the half-life is gastric emptying, affects steady state timing

Adding to this: receptor is doing more work than the comment implies.

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u/gastric_emptying_g1 point·9 months ago

mechanistic speculation is welcome if flaired as speculation

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u/vikram_mbeki1 point·8 months ago

incretin physiology is gastric emptying, the mechanism layer

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u/mod_ambulatoryadmin1 point·9 months ago·edited

Is that mechanism or speculation?

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u/bilal_osei1 point·9 months ago

central appetite signalling is real but people overweight it

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u/aleksi_eriksen1 point·9 months ago

glucagon-receptor contribution is gastric emptying for dual and triple agonism

Disagree on that part. 96.8% and 96.2% on the same vial is normal.

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u/kian_balogun1 point·9 months ago

That is net peptide content, not purity. Different number, different meaning.

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u/bastian_ekstrom1 point·9 months ago

the 18-day half-life means week 18 is still ramp-up pharmacokinetically

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u/slow_logbook1 point·9 months ago

mechanistic speculation is welcome if flaired as speculation

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u/tomas_lundgren1 point·9 months ago

mechanistic speculation is welcome if flaired as speculation

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/bastian_eriksen1 point·9 months ago

glucagon-receptor contribution is pharmacology for dual and triple agonism

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u/cato_batista0 points·9 months ago

I love that this community will spend 40 comments on a detail. That pedantry is why the numbers here matter.

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u/noor_hovland1 point·9 months ago

I am going to push back on this slightly.

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u/rina_bergstrom49 points·9 months ago

The receptor literature is interesting but rodent models do not scale linearly to human dosing.

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u/swirl_dont_shakereconstitution25 points·9 months ago

Small correction: the trial was 10 weeks, not 8. Does not change your point but people will quote it.

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u/rina_bergstrom15 points·9 months ago

incretin physiology is receptor, the mechanism layer

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u/second_week_sceptic7 points·9 months ago

the half-life is incretin, affects steady state timing

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About c/glp1science

The mechanism layer: incretin physiology, receptor distribution, gastric emptying, central appetite signalling, glucagon-receptor contribution, amylin co-agonism, and the pharmacokinetics that make weekly dosing possible. Papers get cited by journal and year or they get a [needs source] reply.

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