ForumStacking & Switching

Tirz/Cagri vs Tirz/Reta--

14 replies4 peopleApr 22, 2026☆ Follow
Summary

Should someone already on tirzepatide add retatrutide or cagrilintide to restore appetite suppression and fat loss after a period of reduced activity?

The original poster has been on tirzepatide for 16 months and recently added a low dose of retatrutide hoping to restart progress after shoulder surgery. Some participants suggest a tirzepatide plus cagrilintide combination may be cleaner than including retatrutide, while one user who tried all three reported no noticeable benefit from adding cagrilintide. Others introduced clenbuterol as an alternative but faced strong pushback over cardiac risks. The thread ends without a clear consensus on the best stack.

What this discussion establishesWhere people disagree

Whether adding cagrilintide provides any additional benefit and whether clenbuterol is worth considering versus glucagon agonists.

Still open

Optimal dosing schedule and long-term safety when combining multiple compounds.

Nothing here is advice.

14 replies · 4 people
PatientHarbour23archiveopening postApr 22

I've been using tirzepatide for roughly 16 months and currently split a 7.5 mg weekly dose. I mixed up retatrutide and took 1 mg on Monday with plans to repeat on Sunday. The idea was to restart progress after shoulder surgery recovery and return to my previous weight now that training is closer to normal. I'm now wondering if cagrilintide might be a better addition than retatrutide. Food noise is mostly gone but chocolate cravings still hit hard sometimes. Should I switch to cagrilintide or finish the retatrutide vial first? I intend to keep tirzepatide long term because it helps my OCD and keeps food noise down.

SharpCinder28archiveApr 22

You mentioned last Friday that tirzepatide alone wasn't cutting it. You could run all three together but would likely need to drop the tirzepatide dose. Something new is expected eventually so I wouldn't buy a full kit of cagrilintide. A single vial can last more than two months at a starting dose.

PatientHarbour23archiveApr 22

The appetite suppression I used to get from tirzepatide feels weaker now. Adding retatrutide was meant to help without raising the tirzepatide dose I had already lowered. Reports from others who combined them showed better fat loss and body recomposition than either alone. A very small dose of cagrilintide on top was considered to push suppression further. The goal is to test combinations for the right balance of silence, fat loss, and appetite control.

PatientHarbour23archiveApr 22

I don't plan to run all three or any combination long term. I just need to create a caloric deficit again after not training normally following shoulder surgery.

PatientHarbour23archiveApr 22
↳ replying to @SharpCinder28

Running all three might be worth trying. Would you recommend pairing tirzepatide with cagrilintide and using retatrutide on its own, or rotating the three every few days? If I try cagrilintide I'll go with just one vial, the same way I tested retatrutide first.

SharpCinder28archiveApr 22

Here are some AI projections for running all three at current doses plus a starting cagrilintide amount. The output suggests a simpler tirzepatide plus cagrilintide stack may be preferable. For dosing frequency, splitting the full stack in half and taking it twice a week is one option, though I haven't tried that with stacks yet. That's the direction I'm considering for a clean two-compound approach.

PatientHarbour23archiveApr 22
↳ replying to @SharpCinder28

That looks helpful, thanks. I'll look into how to adjust the split dosing.

SharpLedger58archiveApr 22

I ran all three together for several months. Adding cagrilintide didn't produce any change I could notice even after raising the dose. Removing it also made no difference.

PatientHarbour23archiveApr 22
↳ replying to @SharpLedger58

What dosing schedule were you using with the three compounds, and what was it before you added cagrilintide?

SharpCinder28archiveApr 22
↳ replying to @SharpLedger58

That line will probably end up in future promotional material.

PatientWillow13archiveApr 22
↳ replying to @PatientHarbour23

Clenbuterol might be worth adding. It promotes muscle growth and fat loss via beta-2 agonism. Side effects like shakes are dose dependent and the compound is heavily criticized in this space. It can raise metabolic rate by 21 percent, lower myostatin, and block new fat cell formation. In livestock it acts as a true partitioning agent. If anyone disagrees, please provide sources beyond case reports.

SharpCinder28archiveApr 24
↳ replying to @PatientWillow13

This is typical bro science and I've repeated similar claims myself before learning more, including about clen. A doctor once argued it could be relatively safe but that view was challenged. Weight loss occurs but the risks may outweigh benefits. The therapeutic window is narrow and there are reports of deaths from both short-term and longer-term effects. Glucagon activity from retatrutide is far safer. Clen is a controlled substance in some places and is mainly used by bodybuilders pre-contest. Heart enlargement is a major concern along with other issues. Many prefer albuterol for its shorter half life and milder cardiac impact. Clen primarily affects the heart.

PatientWillow13archiveApr 24

Skeletal muscle has all three beta-adrenoceptor subtypes with roughly ten times more beta-2 than beta-1 or beta-3. Cardiac muscle has more than twice as many beta-1 as beta-2 receptors. This difference provides a basis for using beta-2 agonists at doses that target skeletal muscle more than heart muscle. At certain doses clenbuterol has produced skeletal hypertrophy without myocardial hypertrophy in animal studies and has supported cardiac recovery in some patients. Physiological doses in rats have also shown protective effects under certain conditions.

SharpCinder28archiveApr 28

Does clenbuterol improve lifespan or quality of life in healthy adults? Evidence points the other way. I've tried clen, albuterol, and steroids out of curiosity and recognize bro science when I see it. Online forums often justify these choices based on feel rather than data. Albuterol is viewed as lower risk due to shorter duration. My preferred stimulant is caffeine. If a prescription option were needed, modafinil would be considered but carries legal sourcing considerations. Comparing clen to other stimulants including the glucagon component in retatrutide shows clear differences in safety profile.

SharpCinder28archiveApr 29

A reported case involved a 34-year-old woman who died after using clenbuterol, likely from cardiac arrest linked to low potassium along with ongoing cardiac stress. The compound can deplete potassium, cause dehydration, vomiting, and gastrointestinal shutdown. In many such incidents, prompt medical care with beta blockers, IV fluids, and anti-nausea medication might have changed the outcome.

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