Giant Semaglutide Thread (and other GLP-1 / GIP agonists)

Interesting data:
Retatrutide (LY3437943) TFA is a triple agonist peptide of the glucagon receptor (GCGR), glucosedependent insulinotropic polypeptide receptor (GIPR), and glucagon-like peptide-1 receptor (GLP-1R). Retatrutide TFA binds human GCGR, GIPR, and GLP-1R with EC50 values of 5.79, 0.0643 and 0.775 nM, respectively. Retatrutide TFA can be used for the research of obesity.

Source:

The novel GIP, GLP-1, and Glucagon Triple Receptor Agonist LY3437943 Exhibits Robust Efficacy in Preclinical Models of Obesity and Diabetes

American Diabetes Association – 81st Annual Scientific Sessions; Virtual; 25-29 June 2021

TLDR from this paper (see attached images):
Retatrutide compared to native ligands:
1.7x weaker at GLP1r agonism
2.5x weaker at GCCR agonism
7x STRONGER at GIPr agonism

This article shows that even tho it's weaker at the GCCR by 2.5x the glucose output from hepatocytes (liver cells) is only 0.6x weaker. So it's quite effective at burning liver fat directly or gluconeogenesis? I'm not sure.

These agonism numbers make it an "unbalanced ligand" or agonist. Compared to Mazdutide which is much more balanced in it's profile. I'm still to find the EC50 for Mazdutide.

See attached slides for reta. I've got a few more articles to read on it.View attachment 341132View attachment 341133View attachment 341134

Are you going down the rabbit hole trying to look for ways to justify the use of Maz? The best way to evaluate, is to test it yourself. I've pulled the numbers before, decided the information was rubbish and ended up with Reta.

The issue with comparing these numbers, is that some are evaluated in vitro, mouse, humans or are inconsistently reported between different websites. Good luck finding a source for the info too. Alot of chemical websites report different numbers, which you cannot find a source for. You can't really compare these GLPs simply based off these. It also depends on how you react to them and so on.

I saw this on a website a long time ago, I don't remember where, i also don't remember if it's accurate anymore. Since i settled on Reta, i stopped bothering, because there really isn't much in the upcoming pipeline. Maybe you can update it or find the updated version and share it, and highlight which is on mouse, in vitro or in humans.

1755287373600.webp
 
Are you going down the rabbit hole trying to look for ways to justify the use of Maz? The best way to evaluate, is to test it yourself. I've pulled the numbers before, decided the information was rubbish and ended up with Reta.

The issue with comparing these numbers, is that some are evaluated in vitro, mouse, humans or are inconsistently reported between different websites. Good luck finding a source for the info too. Alot of chemical websites report different numbers, which you cannot find a source for. You can't really compare these GLPs simply based off these. It also depends on how you react to them and so on.

I saw this on a website a long time ago, I don't remember where, i also don't remember if it's accurate anymore. Since i settled on Reta, i stopped bothering, because there really isn't much in the upcoming pipeline. Maybe you can update it or find the updated version and share it, and highlight which is on mouse, in vitro or in humans.

View attachment 341189
I just started Mazdutide. I'm just curious more than anything else....
 
Ah okay. Stick with what isn't working then.
I have veins on my abdomen, isn't working my ass. eating 300g of protein is a retarded way to supress appetite and barely even effective. Would be cheaper and healthier to up the Tirzepatide or add a low dose of Metformin or Cagrilintide.
Super high protein intake is just a good way to damage your health and longevity for no benefit. Over 1g/lbs of bodyweight is useless, unless you are on a lot of AAS and HGH, in that case you might benefit from up to 1.25-1.35g/lb. But then again it's a shitty trade off.
 
Are you going down the rabbit hole trying to look for ways to justify the use of Maz? The best way to evaluate, is to test it yourself. I've pulled the numbers before, decided the information was rubbish and ended up with Reta.

The issue with comparing these numbers, is that some are evaluated in vitro, mouse, humans or are inconsistently reported between different websites. Good luck finding a source for the info too. Alot of chemical websites report different numbers, which you cannot find a source for. You can't really compare these GLPs simply based off these. It also depends on how you react to them and so on.

I saw this on a website a long time ago, I don't remember where, i also don't remember if it's accurate anymore. Since i settled on Reta, i stopped bothering, because there really isn't much in the upcoming pipeline. Maybe you can update it or find the updated version and share it, and highlight which is on mouse, in vitro or in humans.

View attachment 341189
Reta has stronger GIP than Tirzepatide? I tought it was mainly GLP1. I have a chart that's a bit different
 
oh wow. pretty close to tirz. I didn't think so. You know I might look into it as well, see if it's worth stacking on the 10mg Tirz I take
Like Ghoul said I wouldn't stack similar GLP1s. Maybe a bit of semaglutide is ok.

It would be better to increase the dose or add a compound with a different pathway.

I've started testing my blood sugar with a pin prick test because I'm concerned stacking HGH and with a GCCR drug might give me diabetes lol

The high level of GIP and low level of GLP1 in Retatrutide makes sense, because people can still eat but generally don't want to. Semaglutide at higher doses almost stopped my stomach so eating was a physical impossibility....
 
Anyone have an opinion on higher dose GLPs blunting insulin release so much it could affect anabolism?
Like youre more insulin sensitive so you barely need any insulin i think is how it works
From my reading of it bro they stimulate glucose dependent insulin release. So basically they increase how much insulin you produce when you eat.

The insulin sensitivity probably comes from the reduction in food intake.

So they should make you more anabolic or make the effects of your native insulin more effective.

Chase Irons was sorta the first guy to float year round glp1 use. In bulking to maintain insulin sensitivity and during cutting to lose weight.

That being said I'm not sure how GCCR (glucagon receptor agonists) effect this balance.

Maybe Ghoul has some input on it.
 
Anyone have an opinion on higher dose GLPs blunting insulin release so much it could affect anabolism?
Like youre more insulin sensitive so you barely need any insulin i think is how it works

No it won't inhibit anabolism.

Insulin release isn't being blunted, insulin sensitivity is being increased. so less insulin is required to achieve the same effect that required more insulin before the GLP, ie muscle nutrient uptake and inhibition of catabolism.

That's why insulin release is lowered. It's a response to improved sensitivity.

We know this in part because weight loss induced by max dose GLPs is biased toward fat vs lean mass. If anabolism was being inhibited the opposite would occur.
 
No it won't inhibit anabolism.

Insulin release isn't being blunted, insulin sensitivity is being increased. so less insulin is required to achieve the same effect that required more insulin before the GLP, ie muscle nutrient uptake and inhibition of catabolism.

That's why insulin release is lowered. It's a response to improved sensitivity.

We know this in part because weight loss induced by max dose GLPs is biased toward fat vs lean mass. If anabolism was being inhibited the opposite would occur.
thank you, ive been going back and forth about increasing my dose from 2mg. I'm eating 3k calories just fine on my ~2nd week of serum at 2mg dose. Just trying to convince myself to up it. I'll probably do 3mg next week
 
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