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Advice needed on going back to Tirz from Reta

19 replies13 peopleNov 5, 2026☆ Follow
Summary

how to switch back from retatrutide to tirzepatide after weight regain and stalling

The original poster stalled after switching from tirzepatide to retatrutide plus cagri, gaining several pounds around the waist despite consistent habits. Replies suggest adding tirzepatide at a moderate dose while continuing retatrutide, trying semaglutide as a booster, or exploring other combinations like eloralintide for appetite control. Experiences with direct high-dose restarts vary, with some reporting stronger side effects after time away. Overall the thread shows mixed results on switching and stacking but no clear consensus on the best path forward.

What this discussion establishesWhere people disagree

whether returning straight to a high prior tirzepatide dose is safe versus needing to restart titration

Still open

whether any stack will reliably restart loss after a stall on retatrutide

Nothing here is advice.

19 replies · 13 people
QuietLantern17archiveopening post4d

I am a 60-year-old male, 6’1”, started on tirzepatide in April 2024 at 237 lbs and reached 185 lbs, just short of my 179 goal. Since early 2025 I have been stuck despite lifting, walking several days a week, keeping a calorie deficit and hitting protein targets. I moved to retatrutide earlier this year and added cagri for hunger control, reaching 10 mg retatrutide weekly, yet the scale has crept back to 192-193 lbs with the extra weight at my waist. My 34 jeans are tightening and I am thinking of going back to 36s. Constipation was the main issue I had on tirzepatide. I have read that people who tolerated both drugs can jump straight back to their last effective tirzepatide dose of 12.5 mg without retitrating. Has anyone switched directly

Track intake with the loseit app set for sedentary level and skip adding back exercise calories. Begin layering by introducing 5 mg tirzepatide three or four days before or after the next retatrutide injection then increase gradually.

SharpCinder28archive4d
↳ replying to @QuietLantern17 (opening post)

I would consider tirzepatide combined with eloralintide. Meanwhile adding tirzepatide on top may help. There are many possible mixes, even including semaglutide. Moving between the two main drugs at higher doses can be tricky anyway. Because of worry about stronger reactions I would not jump right back to a high tirzepatide dose. You mentioned in an earlier post from January that 15 mg tirzepatide felt like nothing. When people plateau or regain after switching to retatrutide they often recall tirzepatide working better, at least in the early phase of loss.

My brother was stuck on 15 mg retatrutide since spring. He took a full month off for a trip this fall and only gained a couple pounds. When he restarted at 10 mg that held his weight but he still wants to drop another 16 pounds. He added 1 mg eloralintide on Monday and by the next day had no appetite and struggled to reach even 1000 calories. Eloralintide might help if hunger remains on high-dose tirzepatide or retatrutide, though responses differ.

SharpCinder28archive4d
↳ replying to @SteadyCinder74

Even at single-vial cost, 1 mg eloralintide weekly is inexpensive. An uncommon mix with 1 mg eloralintide still shows how many different combinations exist even among the same few peptides.

GreenPebble13archive4d
↳ replying to @QuietLantern17 (opening post)

What dose of cagri are you using? That compound tends to suppress appetite effectively.

GreyLantern71archive4d

Have you considered adding semaglutide to the mix? I use 10 mg tirzepatide on Thursday and 0.5 mg each of cagri and semaglutide on Monday. Semaglutide is lower cost than the other options and lasts about a week. Just an idea.

SharpCinder28archive4d
↳ replying to @GreyLantern71

One user would agree that semaglutide handles appetite control well. Anecdotally they are on 10 mg retatrutide with no appetite control until they add semaglutide back in; removing it leaves them very hungry again.

KeenMeadow10archive4d
↳ replying to @SharpCinder28

Semaglutide really stands out for that effect. If sides appear, lower the amount, especially when using it only as an add-on.

SharpCinder28archive4d

The last time I purchased single vials of semaglutide they were inexpensive from a reseller clearing stock. I have not used semaglutide much so far. More comments praise semaglutide, and one person moved from semaglutide to eloralintide for stronger appetite control. There are also further notes on eloralintide and stacking in general.

BlueAnchor59archive3d

Reports on jumping straight back are mixed. Some tolerate near their old tirzepatide dose fine, yet others notice stronger stomach side effects than before after a break, which is why starting lower and titrating is the safer pattern. Appetite response also differs; some regain control quickly while others see little change for weeks. It is worth checking the restart dose with the prescriber, and stopping then resuming does not automatically fix a prior stall at high dose.

↳ replying to @QuietLantern17 (opening post)

I wonder about your longer-term weight pattern. Have you carried extra weight for years or lost and regained repeatedly? Maintaining or finishing the last pounds is the tougher stage. Any medical conditions or diabetes? You are active, which does not always drive loss but helps keep weight off. The scale shows you are not in a deficit right now, since weight cannot rise if intake stays below expenditure, though long-term calorie limits are hard for most. Better food choices can still make things easier. You have lost 22 percent at peak but sit around 19 percent now. I do not know why you capped at 12.5 mg tirzepatide and 10 mg retatrutide instead of going to 15 mg and 12 mg; was it side effects? Results so far are a bit below average but still reasonable. Moving from 10 mg retatrutide to 12.5 mg tirzepatide probably will not change much if you are already stalled or gaining near the top doses.

GreyHarbour55archive3d

I plan to switch maintenance once I finish my current retatrutide vial, moving from 3 mg retatrutide to 2.5 mg tirzepatide in one step. I have used 3 mg retatrutide for a year and a half for maintenance and like it because I can eat normally and stay stable. I simply have extra tirzepatide on hand that I want to use up, so I will keep the retatrutide supply for later and rely on my cagri stash if needed.

Appreciate the detailed reply, it's the sort of input I needed. The main worry for me is having to begin the dose increases from scratch, even though I handled 12.5 mg of Tirz fine before. Still, the idea that my reaction could be different after the break makes sense. Plus, I'm unsure if returning to it would help since I was already stuck before. Plenty to think about. Thanks once more!

I question whether jeopardizing a year and a half of steady results makes sense just because extra amounts sit around. It looks like your situation already hits the sweet spot with body weight exactly where you want it and no appetite issues. Do you expect to bump up that current amount after a while since the switch leaves you on a reduced strength versus the other option?

AmberMeadow80archive3d

I've been thinking about moving over to a different compound instead of the one I'm using now, in hopes of getting stronger control over my hunger and also a reduced pulse. After staying steady on my present regimen for a quarter year, I'm curious to test out the alternative and find out how it compares. How dangerous do you think it is to transition between these two?

During my thirty days traveling around Asia I skipped bringing those medications and overate without holding back including plenty of sweets. Just like your sibling my weight rose only by a couple of pounds. Covering roughly twenty thousand steps each day through ordinary tourist outings and purchases seemed to make the difference rather than any intentional workouts.

WarmBramble71archive3d

After dieting for months on end I often realize the value in stopping briefly to let my metabolism and internal systems stabilize. Adding back some weight temporarily might be required before moving forward once more. Trying to force more progress by cutting calories even lower doesn't lead very far. Increasing food amounts gradually for a period helps regain the energy required to proceed. Keeping everything under control is what matters most.

GreyHarbour55archive2d
↳ replying to @CopperSignal27

I don't see much danger here. Raising the amount past 2.5 might happen later if required, but starting low for now. Variations in weight don't worry me because my routines change often. Only a gain of six to ten pounds within a few months would make me take notice. Without that, this test seems to work out okay for my situation. I'll post updates as I continue.

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