CommunityDosing & Titration

Damnit!! Took a 15mg dose of Cagrilintide instead of Triz.. whats going to happen??

48 replies33 peopleDec 8, 2025☆ Follow
Summary

what happens after accidentally dosing cagrilintide instead of tirzepatide

The original poster realized the switch resulted in only 2.5 mg of cagrilintide and reported no side effects over several days while skipping their usual tirzepatide. Other users described varying experiences with cagrilintide including strong appetite suppression, constipation, nausea, and the need for hydration or stool softeners. Advice focused on supportive care like electrolytes and waiting out the long half-life rather than seeking medical reversal.

What this discussion establishes

Nothing here is advice.

48 replies · 33 people
IronSparrow40archiveopening postDec 8, 2025

Darn it, I just injected 15 mg of cagrilintide thinking it was tirzepatide. What should I expect now?

IronSparrow40archiveDec 8, 2025

I have been on tirzepatide for a year and cagrilintide for a few months, but this is the first time I grabbed the wrong vial.

IronSparrow40archiveDec 8, 2025

Hold on, the concentration in the cagrilintide vial is lower, so I actually only got 2.5 mg at 75 units. That is a relief, I was panicking for a minute.

IronSparrow40archiveDec 8, 2025

My usual cagrilintide amount was 0.4, so this is still an increase, though I had been using it three times a week.

SlowBeacon94archiveDec 8, 2025

The message contains only interface text for a lightbox viewer.

SharpLedger58archiveDec 8, 2025

Here is a short video that might be related.

SharpCinder28archiveDec 8, 2025

I would skip any GLP medications for about a week just to be safe.

PatientWillow72archiveDec 8, 2025
↳ replying to @IronSparrow40 (opening post)

You are probably looking at a tough week ahead.

PatientWillow72archiveDec 8, 2025
↳ replying to @IronSparrow40

Even 2.5 mg can hit hard. I once combined 1 mg with 7.5 mg of tirzepatide and only now feel like eating again.

QuietBramble77archiveDec 8, 2025

Cagrilintide left me very constipated. Hard to say what will happen here. Just be more careful next time.

ClearHarbour45archiveDec 8, 2025

It is tirzepatide, not triz.

WarmAlder92archiveDec 8, 2025
↳ replying to @IronSparrow40

Make sure to get fiber, water, electrolytes, and enough calories. Maybe try Gatorade and a fiber supplement.

SharpCinder28archiveDec 8, 2025
↳ replying to @IronSparrow40

If symptoms get bad a doctor could prescribe metoclopramide for stomach emptying issues, and it may also ease nausea or heartburn.

AmberKettle69archiveDec 8, 2025

Drink plenty of fluids and add electrolytes often. At half a milligram I could hardly eat and felt irritable. Protein shakes might help if solid food is unappealing.

IronSparrow40archiveDec 9, 2025
↳ replying to @SharpCinder28

Understood. I thought I had really messed up by taking the wrong one. So far nothing feels off, keeping my fingers crossed.

IronSparrow40archiveDec 9, 2025

I was convinced something terrible was about to happen, and I had also dosed my sister who takes a lower amount of tirzepatide than I do, so at least that part is less concerning.

IronSparrow40archiveDec 9, 2025
↳ replying to @SlowBeacon94

Still feeling okay at this point.

BlueMarble65archiveDec 9, 2025

I once took 5 mg with no problems at all.

KeenBramble97archiveDec 9, 2025

Start a stool softener to avoid getting backed up and maybe toss any food that will spoil since hunger will probably disappear for a while. Not medical advice and this could be poor guidance.

WryLedger88archiveDec 9, 2025
↳ replying to @IronSparrow40

How are you feeling today? I have been worried along with you about this.

AmberMarble84archiveDec 9, 2025

How are things going? You have probably been pretty sick by now.

IronSparrow40archiveDec 9, 2025
↳ replying to @AmberMarble84

I feel completely normal with zero side effects.

IronSparrow40archiveDec 9, 2025
↳ replying to @WryLedger88

My sister and I are both still okay with no problems, though we skipped our tirzepatide doses just in case.

IronSparrow40archiveDec 11, 2025
↳ replying to @PatientWillow72

Everything is fine on day three. Glad it was not the full 15 mg.

AmberCompass33archiveDec 11, 2025

This is exactly why I got a label maker. It is cheap, simple, and I only need it for the vials in use. I am too forgetful to keep track otherwise and could easily mix up different peptides.

CopperSignal27archiveDec 11, 2025

I bought a labeler after pulling out two different vials, removing their colored caps, and then realizing I could not tell them apart. Luckily one causes an itchy lump so I figured it out after testing, but now I label everything right away.

CopperFenwick68archiveDec 11, 2025
↳ replying to @IronSparrow40

75 units? Why dilute it so that you need that much volume for a dose?

SharpQuill49archiveDec 13, 2025

There seems to be a ceiling effect. I stopped using it fairly quickly because tolerance built so fast.

SlowHarbour21archiveJan 30

So did you end up okay?

QuietAnchor28archiveMar 4

I try to choose concentrations so the dose fits in 10 to 25 units for comfort. Larger volumes are not pleasant for subq shots even if the compound costs a bit more.

ClearBeacon24archiveMar 4
↳ replying to @QuietAnchor28

That depends on how much bac water you add. You can adjust concentration so 5 mg equals 10 or 20 units. Look into peptide calculators.

SlowTimber14archiveMar 5
↳ replying to @CopperFenwick68

I was wondering the same thing but staying quiet.

SharpCinder28archiveMar 7

The original poster was last seen on Wednesday, so they are clearly still fine after the December incident.

BlueAlder28archiveMar 7
↳ replying to @KeenLedger22

I know. I was hoping for a detailed hour-by-hour account of any symptoms. At least it sounds like there were none. This is exactly the kind of mistake I could see myself making.

NorthLantern91archiveMar 7

Your body part will fall off but the wolverine blend will make it grow back.

SlowBramble78archiveMar 7
↳ replying to @IronSparrow40 (opening post)

My guess is intense stomach trouble with nausea, vomiting, cramps, and either diarrhea or constipation plus other annoyances. These effects can last days because of the long half-life.

ClearBeacon24archiveMar 7
↳ replying to @SlowBramble78

You are about three months late to this discussion.

NorthMeadow64archiveMar 8

Do any cagrilintide vials come in sizes larger than 10 mg?

WarmWillow50archiveMay 4

Since the original poster has not returned, I wonder if this story is real or just meant to get clicks. It reminds me of another overdose post that seemed like a joke.

CopperMarble87archiveMay 4

2.5 mg is a beginner amount.

PatientHarbour23archiveMay 7
↳ replying to @CopperMarble87

I foolishly began at 0.5 mg and feel like I might not survive it.

NorthMeadow64archiveMay 8

I moved up to 1 mg around week three or four and noticed some morning nausea, more than what I felt after 18 mg of tirzepatide taken three days earlier.

PatientAnchor11archiveMay 10
↳ replying to @IronSparrow40 (opening post)

Jumping in here. My wife's research subject received 3.75 mg of cagrilintide instead of the usual 7.5 mg of tirzepatide yesterday and is now very nauseous with dry heaves. What should we watch for and how can we help? She has never used cagrilintide before.

Add your experience

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