The Biochemical Beauty of Retatrutide: How GLP-1s Work

https://acesounderglass.com/2025/10/13/the-biochemical-beauty-of-retatrutide-how-glp-1s-actually-work/

by surprisetalk • 2 months ago

73 67 2 months ago

mchusma• 2 months ago

Retatrutide is incredible in a mind altering way. I know 4 people on it, including myself. And all just love the way it makes you feel. You just don’t want to eat as much and you want to eat healthier. As far as I can tell, that is it. While I’m nervous there could be long term side effects, I think the health benefits of being at a healthy weight mean that for probably 50% of the developed world they would benefit from it.

Looking forward to more formal studies though!

icameron• 2 months ago

Does it alter you mind more than just your appetite for healthy food like you said? Is there a buzz or general mood lift as well?

cj3• 2 months ago

If there's any mental effect, it's most likely from eating less food (and most likely healthier food) and feeling better because of that.

It doesn't increase your appetite for healthy food. It will punish you for eating bad food. "Don't eat that steak, you're going to have crazy stomach pain tomorrow if you do!"

stavros5• 2 months ago

Unfortunately, my experience with tirzepatide doesn't make me hopeful: It either gave me terrible diarrhea and sulfur burps, or it did nothing at all, even on 15mg. Hopefully retatrutide is different, but I'm not holding my breath.

It did work for around two weeks, though, and it was great. I constantly felt mildly carsick, so I didn't really want to eat anything, but also didn't have much trouble eating my macros.

cj3• 2 months ago

How did you get to 15mg and only had it working for 2 weeks? The starting dose is 2.5mg and it takes many months to titrate up to 15mg. Most people never get to 15mg.

I've read hundreds of anecdotal experiences from people on these drugs, and haven't encountered anyone taking 15mg without success.

zemvpferreira• 2 months ago

Sorry to hear that. As a counterpoint for the peanut gallery I've been on tirzepatide for 5 months and lost 15 kg in the first 3 months, never going past a 1.25mg dose. I've only creeped up to 3mg since and keep losing around 0.3 kg per week. No side effects except for super mild nausea every now and then. I plan to stay at a similar or lower dose for the next couple of years.

I had the good fortune of responding well and being at a great starting point: despite being 40% body fat I exercised a lot and had great labs to begin with. Anecdotally I've found starting metabolic health to make a huge difference in dose response.

gedy• 2 months ago

Everyone is different but I lost over 40lbs just by taking 5mg over about 5 months

ChiperSoft3• 2 months ago

This has been my experience with ozempic as well. It has helped with my insulin resistance, but if I take anywhere near a weight loss dose my intestines slow so much that food starts fermenting in my gut and it gives me sugar alcohol poisoning.

nose• 2 months ago

How is everyone purchasing Retatrutide at this moment? It's still in phase 3 trials, and I keep hearing of people being on it. Not really seeing safe options with proper lab testing.

Other pharmaceuticals at the phase 3 stage (such as Buntanetap for Parkinson's disease) are super difficult to get, even with the right to try exemption in the US.

antinomicus• 2 months ago

Yeah, I hear everyone talk about it like it’s just super easy to get…

bsamuels• 2 months ago

they buy it from research peptide vendors

elteto• 2 months ago

Wellness/Health clinics sourcing from China or compounding pharmacies, which themselves source the ingredients from China.

QuantumGood2• 2 months ago

Start by looking at independent lab test results from multiple vendors, e.g. https://www.finnrick.com/products/retatrutide

SomaticPirate• 2 months ago

https://www.ft.com/content/b15407bd-7b86-45c3-9780-0c92117cc...

They are buying from Chinese dealers. And sadly, as with most GLP-1s they likely will need to take them for the rest of their life or suffer some incredible rebound weight loss/ negative health effects.

These medications are incredible if you are overweight and need them. But they are not a panacea. Also arguably buying these drugs from Chinese dealers means there is no recourse if you get a bad batch.

There is a pseudo testing setup around Finnrick but talk to anyone with a PhD in biochemistry and there are numerous ways these molecules can be improperly manufactured.

Surprised to see so many on HN being relatively careless with their heath

jfreds• 2 months ago

I tried semaglutide and while it was effective for losing weight, it made working out impossible (felt exhausted and very sick as soon as hr went up) and it made hangovers awful. Is retatrutide any different?

the_real_cher2• 2 months ago

I got food poisoning on a glp2 and it was the worst I've ever felt in my life for like a week because it it slows the digestion.

it was an edge case I had not considered.

tsol• 2 months ago

Had the same issue. With reta I have more energy than normal and workout even more than usual. I get great workouts despite eating around 1400 calories a day. I don't wanna act like it's without flaws but I gotta say it does it's job very well

asdff8• 2 months ago

Now that the drug has shown you what a more appropriate portion is, do you think you can manage that on your own without the drug?

gpt5• 2 months ago

All research points to a "no" answer - weight is regained, and quickly. Which helps explain why obesity is so prevalent - it is something in the brain's chemistry.

ribosometronome• 2 months ago

The issue is not lack of knowledge about appropriate amounts to eat, it's the physical sensations and mental state of being satiated at those amounts and the self control to limit yourself when you are not.

n8cpdx2• 2 months ago

I’m hungry right now. I should be working, but all I want to do is to eat. I have already eaten more than enough today, and I would like to lose weight.

I could take more caffeine to reduce my desire for food, but it is already too close to bedtime. I could try to focus on work (I am) but I keep getting intrusive thoughts about the fact that I could just get ice cream/cookies/chicken fingers/burrito/quesadilla/insert food here in just a few moments.

I wish I could take these drugs, unfortunately I cannot. Terrible side effects.

Strangely, after visiting Japan I found it quite easy to eat a healthy low calorie diet for about two weeks. Now I’m back to constant food noise, despite trying to stick to a Japanese-style diet (lots of fish and vegetables and fermented foods).

The people who say “just eat less” don’t understand what the actual problem is.

cwyers• 2 months ago

I was on a GLP-1 a few years ago and lost 70 lbs. After I got off, I kept a ton of diet changes (no more Pepsi or Gatorade and a lot of water instead, switching to whole grains and fiber/protein variants on pasta, etc.) and gained the weight back in a year and a half. The literature backs this up: keeping up weight loss is hard.

mtdewcmu• 2 months ago

> Retatrutide is incredible in a mind altering way
> and all just love the way it makes you feel

Maybe it will turn out to be an antidepressant as well. That would be quite a coup.

rickydroll• 2 months ago

There have been some hit pieces on Retatrutide that claim it blunts emotions, period. It was characterized as, "falling out of love with someone." Have you noticed anything like that?

zoba• 2 months ago

I hope it is more effective that Tirzepatide of which I am a rare nonresponder and have only gained weight.

caycep• 2 months ago

Author spent a ton of time writing this up "for fun"...but glad people are still doing this and old school blogs. The effort required seems substantial...

Not sure about the AI style transfer images... sure it's a valid way to get the illustrations you want but I don't have to like it...

glp1guide• 2 months ago

I keep track of GLP1s and write a lot about them (looking for negative side effects, research results, etc) and it is amazing how potent retatrutide is. It’s not simply a matter of “more agonists, more better” but it looks like Eli Lilly has really cracked it.

There is a large enthusiast community of the body building variety (who are usually first) who are already performing a bit of an unscheduled human trial and I have to say the results are amazing. We have both injectable retatrutide and pill form retatrutide to look forward to (pill form is unannounced but I have a hunch!).

malwarebytess2• 2 months ago

These GLP-1 drugs seem to do more than what the article describes. The spontaneous cessation or serious reduction of addictions (chemical, behavioral) and otherwise compulsive behaviors when taking GLP-1s is widely discussed and described.

It seems like it does something else. https://sph.brown.edu/news/2025-07-24/brain-science-glp-1s-a... https://pmc.ncbi.nlm.nih.gov/articles/PMC11202225/

arjie• 2 months ago

The magic trick with these is the way to increase half life. It’s really quite an amazing piece of work. I used retatrutide for a while very effectively but then we’ve been traveling a few months and I’ve gained quite a bit of weight back as expected.

The drug is pretty much ideal: dose-response curve doesn’t flatten too much, adaptation is present but not extreme, it is entirely reversible when you get off it.

The side effects I see are a histamine reaction at the injection site and cold sensitivity. To stop the former I varied duration of injection, temperature of solution, and site. None of these had any effect so I just lived with it in a place it wasn’t too uncomfortable.

I haven’t been lifting very much during the period immediately prior due to injury playing sports and reinjury due to inactivity after a motorcycle accident years prior.

My peak lifts were @155 lbs: squat 265x5, deadlift 375x2, bench 185x1, ohp 135x5. Stating these so you know where to baseline.

Immediately prior to retatrutide schedule: squat non functional (could not squat), deadlift 225x5, bench 125x1, ohp non functional (could not raise arms above head). Weight 199.3 lbs And I was also going to physical therapy.

After schedule: squat 135x5, deadlift 325x5, bench 135x10, ohp 135x2. Weight 173 lbs

1.5 months after cessation: I didn’t increase lifts due to not having standard programming. Weight 182 lbs.

Overall, an excellent drug. I should note that I ramped up slowly from under 1 mg/week up so my nausea and other symptoms were extremely minor. At lower doses I’d walk up to the fridge as I did in the past and then decide against eating a snack. At higher doses I wouldn’t get up. I already knew I should drink but I drink a lot of Coke Zero so that was fine. I never actually hit a routine dose that was within the tested range, I was always lower.

UltraSane• 2 months ago

Gaining fat means you are eating a caloric surplus

The Biochemical Beauty of Retatrutide: How GLP-1s Work

Related Stories