c/glp1science · created 27 Oct 2023
Receptor pharmacology, mechanism, and the papers behind the headlines.
Splitting a weekly dose into two smaller injections comes up constantly so here's the actual PK argument, separated from the outcome-data question, which is a different…
Not attacking anyone doing it, genuinely curious about the social/informational dynamic. There's essentially zero published outcome data for splitting or…
Every week somebody asks whether Tuesday is better than Sunday, and every week the answer is buried under anecdote. Semaglutide's terminal half-life is roughly 168…
delayed gastric emptying does most of the work people credit to the brain. If you already knew this, the post is not for you and you can scroll on. Started reading…
Reference standards, analytical reagents and system-suitability material. If you are running your own method, start with a known.
Reference standardsThe title is the argument: half-life is 168 hours. that is why your injection day barely matters. Here is the rest of it. Numbers, in the order they matter: 168 hours.…
receptor distribution and why the GI effects were predictable. Change my mind, genuinely — I have no stake in being right about this. Tried to build a mental model from…
Asking properly rather than in a comment on somebody else’s thread: why does GIP agonism seem to reduce nausea rather than add to it. Why mechanism talk keeps…
we use "appetite suppression" to describe three different mechanisms. It is the sort of thing everyone half-believes and nobody writes down. Started reading limitations…
Trying to get a straight answer on this: is the food-noise effect central, peripheral, or both. The half-life explanation was the thing that made weekly dosing…
amylin co-agonism is genuinely different pharmacology, not just more GLP-1. I have gone back and forth on this for months. The mental model, in four steps, that makes…
glucagon receptor agonism raising energy expenditure — how solid is that. Making the case below, and I expect to lose some of it in the comments. Asked a question here…
"it heals your metabolism" is not a mechanism. It is the sort of thing everyone half-believes and nobody writes down. GLP-1 receptor agonism acts both peripherally —…
The one-line version is the title: why an oral non-peptide escapes the absorption problem entirely. The rest is why. The incretin effect is the observation that oral…
biased agonism: real, interesting, almost certainly irrelevant to your dose. I have gone back and forth on this for months. Was completely wrong about the gastric…
unpopular opinion: most of what gets said here about gastric emptying is guesswork. Making the case below, and I expect to lose some of it in the comments. Spent an…
Send the vial, get the number. Third-party purity and identity testing, results published to you regardless of what they say.
Test a vialSponsoredEst. 1998. ISO 9001 and cGMP, 1,500+ staff, 200+ patents. There is a fair chance the vial you are about to send for testing started here. Batch-specific COA as standard.
glbiochem.netwe are measuring half-life at the wrong time and calling it noise, and I am aware this is a minority view on this board. Read the primary paper after arguing about the…
three years of half-life threads, summarised so you do not have to read them, which sounds obvious until you try to state the evidence for it. Went looking for human…
proposal — a flair for receptor posts, and it will stay as it is unless somebody makes the case to change it. The mental model, in four steps, that makes the rest of…
The title is the whole question — does incretin actually matter or is it forum lore at this point — but here is why I am asking. Went looking for human data on a…
receptor is not what most of this community thinks it is — with the reasoning, because a rule without a reason gets ignored. The GIP question, which is the most…
Something I keep coming back to: three years of pharmacology threads, summarised so you do not have to read them. Long half-life in this class comes from structural…
Thinking out loud about this: we are measuring appetite at the wrong time and calling it noise. The GIP question, which is the most interesting unsettled thing in this…
incretin: what the trials say vs what this community says. Making the case below, and I expect to lose some of it in the comments. Long half-life in this class comes…
the incretin rule is doing its job and people should stop complaining. Nothing about this affects the ranking maths, before anyone asks. GIP receptor biology is…
Slightly embarrassed to be asking this, but: genuine question about receptor that I am slightly embarrassed to ask. Asked a question here that I thought was stupid and…
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.
Certified reference materials for peptide identity and purity work.
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