Going from Tirzepatide to Reta

[spryeasygoing29]

Considering a switch away from tirzepatide over to reta. Priority is avoiding any additional muscle loss and ideally clawing back some of what already disappeared while on tirz. Anyone have guidance for converting a dose coming down from 15mg weekly into the reta equivalent? Does a conversion table exist somewhere, some general guideline, or would it make more sense just starting at the smallest reta amount and working upward from there? Also open to hearing what compounds pair effectively alongside reta.

 

[cocoa-month6]

Was doing a similar body recomposition. Switched over abruptly since each half-life works out to roughly a four-week transition anyway.

Appetite suppression wasn't quite as strong on reta, but it seemed to burn through remaining fat more effectively even though I ate a touch more.

Glad I made the switch. Now sitting in maintenance mode, which has honestly taken more tweaking to get right versus just running reta flat out.

 

[ozalumna_vibes]

Hey everyone!!

Lost 9 pounds of muscle since January somehow. Oddly enough, wrapped up an aggressive cut right around end of January, bumped calories up by 800 and cut cardio back an hour, now doing 1.5-2 hours weekly. Only real change was starting reta at 2mg weekly. Can't figure out how muscle dropped this much given resistance training five or six times weekly plus clean eating the whole time. Body fat climbed from 10% to 14%, so the muscle loss makes even less sense to me.

Anyone aware of research pointing toward reta reducing how well nutrients get absorbed?

 

[wobbly_whittler115]

For leaner people specifically, I think reta behaves a bit differently. Some mild hunger at the start for me, but that faded completely as the weeks went on, still on the same low weekly dose about nine weeks in now. Just recently added cagri into the mix alongside reta, and wow, what a difference. Hunger's still basically nonexistent like before, but the fullness factor jumped to a whole new level, feeling satisfied pretty much all day now. Makes sense pairing the two since they work through different pathways, both slowing digestion and boosting that sense of fullness, they really do complement each other well.

 

[slowloss_weekly38]

This is more of an educated guess, based on going through a fair amount of the research plus what gets discussed on forums like this.
A simple, conservative approach would be running roughly two-thirds your tirz amount in reta, so something like 15mg tirz translating to 10mg reta. Want extra caution? Cut that to half instead. Going more careful than that seems unnecessary, there's no guarantee the switch itself won't bring extra side effects since everyone reacts a bit differently across these compounds, but it's not especially likely. Reta does tend to push heart rate up somewhat more than tirz, so with existing heart conditions, either skip reta since it hasn't been studied there yet or move very slowly and carefully with any increases.
Overall pretty low risk and saves you months of painfully slow titration. Once you see how the first dose or two treats you, you'll have a much clearer sense of what to expect and how to handle further increases from there.

 

[cinnamon-m6]

Right there with you, I've built up a fairly large supply of the dual-action compound for the same reason. Get that the third compound tends to preserve muscle better, but once I'm settled into a maintenance amount I'm hoping to gradually pull back the dose and build from there.