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Technically Possible To Combine Reta/Tirz w/ Eloralintide?

44 replies17 peopleMay 25, 2026☆ Follow
Summary

Can eloralintide be safely mixed in one solution with tirzepatide or retatrutide, and what happens when people try stacking them?

Forum users note that eloralintide requires a different pH than GLP-1 drugs, which may explain why one company abandoned co-formulation. Several people report mixing or stacking anyway, with some preferring separate days to manage side effects. Early self-experimenters describe good appetite control and steady weight loss at low doses without major new issues beyond thirst and occasional fatigue.

What this discussion establishesWhere people disagree

Whether Chinese manufacturers have solved the pH/co-formulation problem or are simply ignoring stability concerns

Still open

Long-term safety and optimal dosing schedule when combining the two classes

Nothing here is advice.

44 replies · 17 people
ClearBramble68archiveopening postMay 25

Curious if anyone knows the science here. There's talk of running trials combining eloralintide with tirzepatide or retatrutide, which sounds promising and a lot of people want to try it. The question is whether the more complex manufacturing makes it realistic to put both in one solution. One company dropped their own co-formulation project, possibly because keeping them separate is simpler and cheaper.

BrightSparrow36archiveMay 26

People are already putting cagri together with sema, reta, and tirz in single vials. My bet is the same will happen with elora once production settles down. Probably in about six months.

WarmMeadow92archiveMay 30
↳ replying to @ClearBramble68 (opening post)

Both cagri and eloralintide were designed for pH levels that run opposite to the GLP-1 meds. That difference is probably why the company gave up on a single-solution version.

WarmSparrow60archiveMay 30

I'm starting my own trial of eloralintide on top of tirz this week at 1 mg. Still deciding whether to do it the same day or space it out.

WarmMeadow92archiveJun 1
↳ replying to @WarmSparrow60

If it's like cagri, I'd pin on a different day. Did you adjust the pH or just use plain bac water?

ClearBeacon24archiveJun 1
↳ replying to @WarmSparrow60

Sounds like you're the test subject—keep us posted.

ClearBeacon24archiveJun 1
↳ replying to @WarmMeadow92

Apparently some manufacturers have already combined sema/cagri, tirz/cagri, and even reta/cagri.

WarmSparrow60archiveJun 1
↳ replying to @WarmMeadow92

Shipping delayed things so I haven't started yet. Planning to use straight bac water and probably stagger the doses—tirz on Thursday, then maybe Monday.

WarmMeadow92archiveJun 1
↳ replying to @WarmSparrow60

Thanks for the update. Looking forward to hearing how it goes.

WarmMeadow92archiveJun 1
↳ replying to @ClearBeacon24

Or they just don't care what ends up in the vial.

WarmSparrow33archiveJun 1
↳ replying to @WarmMeadow92

Cagri can wipe you out if the dose is too high. I can't go over 0.75 mg.

WarmSparrow33archiveJun 1
↳ replying to @WarmMeadow92

I'd be cautious about any cagri combo. Even 1 mg was too much for me—it's strong stuff.

WarmMeadow92archiveJun 1
↳ replying to @WarmSparrow33

Totally agree cagri is potent. Just did my third 0.5 mg dose and the first week was rough. Even if mixing were stable, I'd still want separate days to control the fatigue.

WarmSparrow60archiveJun 2
↳ replying to @WarmMeadow92

Package arrived. Mixed with 2 mL bac water—crystal clear, no cloudiness. Took 1 mg and will do my usual tirz on Thursday. Fingers crossed.

CopperSignal46archiveJun 2
↳ replying to @WarmSparrow60

Can't wait to hear how it goes. I've been eyeing it but the cost has kept me from pulling the trigger so far. Thanks for testing and sharing.

QuietMarble33archiveJun 2
↳ replying to @WarmSparrow60

You're going to end up the skinniest person around—congrats.

GreyMeadow99archiveJun 2
↳ replying to @WarmSparrow60

Please keep posting updates. I have some landing soon and can't wait to try it.

WarmSparrow60archiveJun 3

Been on tirz for a year at 15 mg weekly. Did 1 mg of the new one yesterday afternoon. Mixed with 2 mL bac water and it stayed clear. Planning to dose it five days after tirz so the levels are dropping. First morning: stomach feels full, bowel movement was harder than usual, zero hunger, energy fine, slept well. Early days but the long half-life is interesting.

WarmMeadow92archiveJun 4

How are you feeling? Did you take the tirzepatide today? Just checking you're still doing okay.

WarmSparrow60archiveJun 5
↳ replying to @WarmMeadow92

Took it from a fresh vial and felt good. Food noise is low, had to remind myself to eat on my usual higher-calorie days. Some dry mouth and extra thirst but otherwise smooth. Still early.

SteadyWillow88archiveJun 5
↳ replying to @WarmSparrow60

Mind sharing the name of the app in your attachment? Haven't found one that already includes this peptide.

WarmSparrow60archiveJun 5
↳ replying to @SteadyWillow88

It's called Regimen. Costs about forty a year.

BrightSignal73archiveJun 6

No deaths reported yet? Mine arrives next week.

WarmSparrow60archiveJun 7

Day-six check-in: down two pounds this week. Seems to be doing what it's supposed to. Keeping the dose at 1 mg for now. The long half-life means levels will keep climbing with each weekly shot.

ClearBramble68archiveJun 7

Good info—thanks for the updates and for doing the legwork.

BrightSignal73archiveJun 7

Any side effects showing up?

WarmSparrow60archiveJun 7
↳ replying to @BrightSignal73

Just dry mouth and more thirst—nothing else so far. Pretty clean profile.

WarmMeadow92archiveJun 7

Someone mentioned testing another batch from a different source but didn't name them. Might surface eventually.

WryFenwick45archiveJun 8
↳ replying to @ClearBeacon24

Haven't seen the reta/cagri mix yet—that's the one I'd want. Time to hunt around.

QuietQuill30archiveJun 8

Really curious how this works out—thanks for running the test.

WarmSparrow60archiveJun 8

Confirmed 14-day half-life in the studies, not just the app. Surprised it matched.

WarmSparrow60archiveJun 11

Thanks for the support. Week-two update: second 1 mg dose yesterday. Levels are rising as expected with the long half-life. Timed it two days before my usual tirz shot and the suppression stayed strong on days it normally fades. Saw a brief eight-point resting-heart-rate bump that went away. Thirst and dry mouth are still there but milder. Down three pounds in ten days, which is better than the recent plateau.

CopperSignal27archiveJun 11

The phase-1 data on half-life looked inconsistent—around two weeks at very low or high doses but closer to one week in the middle range. Weight loss hadn't plateaued at 48 weeks, and lean-mass preservation looked better than cagri in the rat studies, especially at lower doses.

WarmSparrow60archiveJun 11
↳ replying to @CopperSignal27

The paper states 12-14 days, so the app was right after all.

CopperSignal27archiveJun 11

You're right—I misread it and mixed it up with cagri's numbers.

KeenPebble65archiveJun 11
↳ replying to @WarmSparrow60

Just started at 0.5 mg and will go to 1 mg next time. Sides are minimal and hunger suppression is mild so far—maybe I should be less cautious. The app's half-life math will be useful.

ClearBramble68archiveJun 11

Reta tends to raise resting heart rate while this one lowers it—maybe they balance each other out nicely.

WarmSparrow60archiveJun 22

Getting ready for the fourth 1 mg shot tomorrow, two days before tirz. The compound builds nicely thanks to the half-life. No need to rush the dose up when stacking—it's riding on top of the tirz without issues so far.

WarmSparrow60archiveJul 9

Week-five update: moving up to 2 mg. Suppression is solid, had some fatigue one afternoon that passed, and slept well. Just took the usual 15 mg tirz. Really like how the two work together. Weight is moving again after a long stall.

GreenBeacon16archiveJul 9
↳ replying to @WarmSparrow60

This combo sounds promising. A classmate on the development team was excited about it last year. I'm at the top of tirz and weight loss has stalled, so I'm interested in trying it eventually.

LevelPebble88archiveJul 9

The studies show slow absorption too—peak levels take 3–5.5 days. The curve in the app assumes faster uptake and makes the peaks look steeper than they probably are.

WarmSparrow60archiveJul 9
↳ replying to @LevelPebble88

The big jump on the curve is from going 1 mg to 2 mg. The shot was two days ago and today's reading lines up with the monthly view.

LevelPebble88archiveJul 12

I replotted the 1.2 mg data points myself and the shape looks different, especially early on—less steep at the start.

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Technically Possible To Combine Reta/Tirz w/ Eloralintide? · ZyraTrack Community