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c/glp1science·posted 1 year ago by u/rina_bergstrom

three years of pharmacology threads, summarised so you do not have to read them

Question Cold Box ×3

I have had 24 orders now and I keep a table, so here is the honest summary rather than a vibe.

Material has been consistent. Communication has not. Shipping has varied by about 26 days on nominally the same lane, which matters more in summer than in February.

The independent number came back 93.7% against a claimed 98.6%, which I read as agreement rather than a discrepancy — inter-lab variance on this assay is a point or two either way and treating one lab as ground truth is how people end up in pointless arguments with vendors.

Batch number is in the comments. Ask if you want the method.

4,496 up / 3,947 down53% upvoted27 commentsid 1s6f1z13 Apr 2025

27 comments

21 in this archive, depth 5

best — the order this archive was captured in

u/aleksi_eriksen78 points·1 year ago

do not extrapolate rodent data to human dosing without saying so

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u/camila_kowalski19 points·1 year ago

do not extrapolate rodent data to human dosing without saying so

Yes, exactly this, and it is the bit that took me 20 weeks to accept.

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[deleted]8 points·1 year ago

[deleted]

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u/ferran_batista2 points·1 year ago

do not extrapolate rodent data to human dosing without saying so

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u/rina_bergstromOP6 points·1 year ago

Yeah, the incretin mechanism is doing the work here.

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u/gastric_emptying_g-25 points·1 year ago

the 21-day half-life means week 21 is still ramp-up pharmacokinetically

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u/isabela_nilsen76 points·1 year ago

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

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u/devils_advocate_d57 points·1 year ago

Where does the pharmacology data actually come from?

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u/aleksi_lehtinen38 points·1 year ago

I am going to push back on this slightly.

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u/rasmus_kimani19 points·1 year ago

do not extrapolate rodent data to human dosing without saying so

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u/piotr_grimaldi7 points·1 year ago

Where does the half-life data actually come from?

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u/elodie_grimaldi31 points·1 year ago

rodent incretin tells you what to investigate, not what to expect in humans

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u/rina_bergstromOP11 points·1 year ago

the half-life is pharmacology, affects steady state timing

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u/rina_bergstromOP0 points·1 year ago

The half-life is 5 hours, which means week 5 is genuinely still ramp-up. Week 38 is steady state.

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u/gastric_emptying_g37 points·1 year ago

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

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u/nadia_fonseca19 points·1 year ago

gastric emptying is real and explains most early early fullness

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u/gustav_vermeulen15 points·1 year ago·edited

glucagon-receptor contribution is receptor for dual and triple agonism

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u/noor_hovland14 points·1 year ago

Yeah, the incretin mechanism is doing the work here.

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u/zeynep_villalobos6 points·1 year ago

do not extrapolate rodent data to human dosing without saying so

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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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