CommunityStacking & Switching

Stacking liraglutide on retatrutide, anyone ?

16 replies7 peopleJul 29, 2026☆ Follow
Summary

Is it safe or useful to keep taking liraglutide while starting retatrutide?

The thread shows mixed views on continuing liraglutide alongside retatrutide after a plateau on the first drug. Some warn of added strain on organs and dehydration while others report no lab issues with similar stacks and prefer single-agent use. Several note that shorter-acting single-receptor drugs like liraglutide add little beyond newer multi-agonists and that dosing should stay conservative to limit GI effects.

What this discussion establishesWhere people disagree

Whether combining two GLP-1 agonists creates clinically meaningful extra risk or is simply unnecessary.

Still open

Long-term safety data on this specific combination and whether any maintenance benefit justifies continued dual use.

Nothing here is advice.

16 replies · 7 people
PlainQuill67archiveopening postJul 29

Hi everyone, has anyone tried using liraglutide together with retatrutide? I have been prescribed liraglutide for roughly two years. It helped me lose ten kilograms but then progress stopped. At first it cut my appetite and stopped constant food thoughts, yet those benefits disappeared once the scale stalled. Research and the recent retatrutide trials indicate weight tends to return fast after stopping a GLP-1, so I kept the daily liraglutide going when I added weekly retatrutide three months ago. I am worried the earlier loss will disappear if I drop it. Does continuing both make sense or offer any real advantage?

QuietCinder90archiveAug 6

You would be layering the two drugs. I tried the same approach with semaglutide and retatrutide before dropping the semaglutide. That combination puts extra load on the pancreas and gallbladder and can cause serious fluid loss. I would stop one of them. Are you using these for diabetes, if you do not mind saying? I am diabetic and had to quit one because my skin suffered badly from dehydration.

PlainQuill67archiveAug 8
↳ replying to @QuietCinder90

Thanks for the input. No, this is for weight management. My genetics have kept diabetes away so far. I have not noticed dehydration yet, but I will think over what you said.

BrightSparrow36archiveAug 8
↳ replying to @QuietCinder90

Are you referring to these two drugs in particular, or do you mean stacking any GLP-1 agonists in general?

SharpCinder28archiveAug 8
↳ replying to @PlainQuill67 (opening post)

I got rid of the brand-name liraglutide because it did not work well for me either alone or added to tirzepatide. For adding to retatrutide or similar drugs, eloralintide or cagrilintide would be cleaner options, with eloralintide carrying lower risk of going too far. These days I just run retatrutide by itself. Liraglutide can hold weight steady but falls short for further loss. Its short half-life once seemed useful for stacking in case of excess, yet that same trait also limited how well it worked and made side effects harder to manage. Retatrutide alone suits me best now.

AmberCinder46archiveAug 8
↳ replying to @QuietCinder90

Weight loss is not tied to one particular drug. Tirzepatide and retatrutide work better than liraglutide. You can switch and still keep the weight off while losing more. If you still want to combine something with retatrutide, choose an injectable that lasts longer.

LevelThistle44archiveAug 8
↳ replying to @QuietCinder90

This sounds like guesswork rather than something measured repeatedly. I combine a large amount of retatrutide with a bit of semaglutide. My blood tests every month show no extra load on the pancreas or gallbladder, and hydration markers stay at least good.

SharpCinder28archiveAug 8

The main worry people here have with stacking is the same one that comes with any GLP-1: taking too much and ending up with rough stomach or gut problems. It is rarely dangerous, though some have gone to the ER after raising higher retatrutide doses too fast and getting persistent hiccups.

LevelThistle44archiveAug 8
↳ replying to @SharpCinder28

I generally suggest dosing by results while watching for bad effects. When you add or change a drug, several small amounts work better than big jumps that leave you dealing with side effects you cannot escape. Eighteen to twenty milligrams of retatrutide plus more than about a quarter to three-eighths of a milligram of semaglutide per week pushes my unwanted effects past what I want to handle.

SharpCinder28archiveAug 8
↳ replying to @LevelThistle44

That is also why the short half-life once appealed to me. Still, liraglutide and orforglipron ended up being more wishful thinking than actual help. The short action plus single-receptor activity limited both the benefits and the side-effect profile.

BrightSparrow36archiveAug 8
↳ replying to @SharpCinder28

For what it is worth, I think combining the agents we have now is probably needed for the best custom results, especially as more agonists with different GLP-1, GIP, glucagon, and other pathway balances keep coming out. Until AI can design a personal plan, we have to test combinations ourselves to get the most out of them.

SharpCinder28archiveAug 8

At some point extra stacking brings smaller gains, especially if drugs like tirzepatide or retatrutide support lasting diet shifts such as lower-fat eating. Another route is the gradual muscle-building approach while holding weight steady on the GLP-1.

QuietCinder90archiveAug 9
↳ replying to @BrightSparrow36

I was talking about the two drugs the original poster mentioned and comparing that to what I had done.

QuietCinder90archiveAug 9
↳ replying to @LevelThistle44

No, this comes from peer-reviewed material we reviewed in training plus clinical placements. Plenty of people show up in hospital with pancreas, gallbladder, or severe dehydration problems. A quick search turns up the same pattern, so I am not guessing. Just because nothing shows now does not rule out trouble weeks or months later.

LevelThistle44archiveAug 9
↳ replying to @QuietCinder90

If you can point to any published peer-reviewed human study on the combination of semaglutide and retatrutide producing major strain and dehydration, I will give a thousand dollars to the charity you name. Otherwise you are claiming a study that does not exist. As someone presenting as a medical professional, please stop making that claim.

QuietCinder90archiveAug 10
↳ replying to @LevelThistle44

Fine, do you feel stronger now that you have questioned my background and called me fake? The material we cover in training discusses how one agonist alone can trigger these problems, so adding another would raise the chance. Using two agonists can increase receptor activity and move closer to saturation. I never claimed a study existed on exactly those two drugs. Next time you want to challenge my qualifications, keep it to yourself because I am not interested in that kind of exchange when I am only trying to offer help. Consider how that kind of response affects someone else. Also, put me on ignore because I have no interest in further contact.

SlowLantern99archiveAug 10

From the AI tool: Here is a moderation review of the thread. The analysis looked at whether anyone engaged in bullying, harassment, or other conduct that would call for moderation. The discussion starts as a normal medical question about whether continuing liraglutide with retatrutide makes sense. Early replies stay on topic. Participants disagree on stacking GLP-1 drugs, possible side effects, whether to keep the first drug for maintenance, how the different drugs compare, dosing approaches, and whether stacking helps at all. No bullying appears in those first exchanges. Some comments are strong or based on personal experience rather than controlled data, but being incorrect

Add your experience

If you have tried it, this topic is still open. Sign in to reply — it takes a minute.