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