CommunityDosing & Titration

What to do for last 20lbs on Tirz @ max dose

30 replies17 peopleApr 3, 2026☆ Follow
Summary

how to break a plateau and lose the final 20 pounds while already at high tirzepatide doses

Users at or above 15-20 mg tirz report stalled loss after major weight drops and discuss stacking sema, adding reta or cagri, or simply raising tirz further. Several who tried sema stacks saw renewed loss of 20+ lbs before stopping; others increased tirz to 20 mg or more with appetite control returning. Cagri is favored by some for a distinct mechanism while reta raises concerns about weaker food-noise suppression. Most agree the final pounds move slowly and require changes in dosing schedule or added compounds.

What this discussion establishesWhere people disagree

whether switching fully to reta or staying with tirz-plus-sema/cagri better preserves hunger control

Still open

which single addition will reliably move the scale without new side effects for this user

Nothing here is advice.

30 replies · 17 people
WarmMeadow92archiveopening postApr 3

To cut it short, I've been using tirzepatide for about 15 months and took 18 mg this morning. Down 107 lbs total and sitting at 228 right now. Goal is 205 to land in the normal range for my height. Started a low sema add-on late November that kept the scale moving until I quit around March over sleep trouble. Looking back, the sleep thing probably wasn't from the sema. A 5 mg tirz dose mid-week felt solid but seemed excessive on top of 17 mg weekly. Going to push protein and training harder. Only have tirz, sema, reta, and cagri on hand. Wondering if grabbing maz or survo to make a makeshift reta mix makes sense or if switching straight to reta is smarter. The part that worries me with reta is reports of weaker appetite control. Or should I restart the sema stack and keep pushing the sema dose?

WarmHarbour28archiveApr 3

I've been running 19.5 mg total for two or three weeks now, split as 12.5 or 13 mg mid-week and the rest on Saturday. Started dropping a couple pounds weekly until vacation threw everything off and I gained five back. If I'd stayed on plan I probably would have been fine. Same situation here, started around 270 aiming for 250 and giving myself six more months. If it happens, great; if not, I've still dropped 60-70 lbs. What comes after that six-month mark, I have no idea.

WarmMeadow92archiveApr 3
↳ replying to @WarmHarbour28

I could easily add another 5 mg next Monday and hit 23 mg for the week. Only real change last week was almost zero interest in food, though eating was still possible. Clinical data suggests I'm probably near the end of what tirzepatide can do for weight loss, so more of it might not be the fix. Feels like something needs to change.

WarmHarbour28archiveApr 3

I like checking the actual trials since there's not much else to go on. That's why I'm treating a year and a half as a checkpoint. Losing over 100 lbs already means you've won, perspective matters. These forums can make it sound like everyone just takes the meds and hits their number without effort. Studies show decent success rates but still only a percentage. I'm older and the extra weight loss won't change looks much at this point. Another 20 lbs would be nice but probably won't move the needle that dramatically. Wish 15 lbs was just a few good bathroom trips, but those days are long gone.

ClearFenwick64archiveApr 3

Just finished my 61st tirz shot and still have 14 lbs left after losing only half a pound in five weeks. Food cravings are returning and it feels like the medication stopped working. Last shot at 20 mg instead of 15 mg made a clear difference with cravings gone again. Tried 17.5 mg earlier and noticed nothing extra over 15 mg. Hope this doesn't mean doses have to keep climbing.

BlueTimber11archiveApr 3

If you're not truly plateaued, just keep doing what worked before. Increase exercise intensity with some high-intensity intervals, shift focus toward building muscle instead of pure scale weight, and accept the final pounds usually come slowly.

LevelThistle44archiveApr 3

Halfway between your next 17 mg tirz doses, add 6 mg reta and drop tirz to 12-15 mg. Wait 24-48 hours, check how food noise feels, then decide whether more tirz is needed before the following reta dose.

WarmMeadow92archiveApr 3
↳ replying to @ClearFenwick64

Lilly is running trials on higher tirzepatide doses and hasn't stopped them for safety, and both of us have handled bigger amounts, so 15 mg clearly isn't the ceiling. I figured I'd be okay going up to 25 mg if needed, though I'm not convinced that's the smartest route.

KeenPebble33archiveApr 3

If the sema stack was working well I'd just keep going with it. The two meds complement each other on different receptors. Stay on both until goal, then drop sema and hold with tirz alone. Those last few pounds are always the toughest.

WarmMeadow92archiveApr 3
↳ replying to @KeenPebble33

Restarting sema is worth considering. I felt decent on it and now realize the sleep problems weren't caused by the sema, so that could be a workable path forward.

WarmMeadow92archiveApr 3
↳ replying to @LevelThistle44

Honestly the main reason I bought reta was expecting tirz to eventually stall and needing something else to finish. So trying reta makes sense, otherwise why stock it. Nothing is permanent; I can always go back to sema if reta doesn't suit. Is 6 mg too high for the first reta dose?

CopperQuill49archiveApr 3

Cagri is my next move once I move from 15 to 20 mg tirz. Reta didn't sit well and the survo combo wasn't worth the sides.

WarmMeadow92archiveApr 4
↳ replying to @CopperQuill49

Looking back, that's probably why I made sure to have cagri available. Ruled out survo earlier for some reason I can't recall now. Reading about pH and fibril issues with cagri made me pause, but I'm going to revisit it.

CopperQuill49archiveApr 4
↳ replying to @WarmMeadow92

Same here. Did some digging and copied a method that seems to be recommended: mix the 10 mg or 5 mg cagri vial with 2 ml BAC water, then slowly add about 0.2 ml of 0.6 % acetic acid, check pH, and adjust in small steps until around 4.0-4.5. It's straightforward once you do it a couple times and keeps the peptide stable.

WarmMeadow92archiveApr 4
↳ replying to @CopperQuill49

Thanks, that sounds like solid guidance on getting the pH right and makes me feel better about trying it.

QuietAlder25archiveApr 4

The last 10 lbs were rough for me too. When 15 mg tirz stalled I went to 20 mg. When that stalled I switched to 20 mg every six days, then every five days for the final month with no bad effects. Maintenance is 10 mg tirz plus occasional 2.5 mg mazdutide. Still have cagri and reta in the freezer if needed.

AmberMarble48archiveApr 4
↳ replying to @CopperQuill49

First cagri I mixed 2 ml BAC and 1 ml AA and got pH around 5, so next time I'll try 50/50. Seems to depend on the acetic acid strength, which is why measuring matters. Realized it's already been five weeks so time for a fresh vial even though only 2 mg used so far.

CopperSignal27archiveApr 4

My starting point was different since I began GLPs mainly for hunger control after already losing weight. Added a modest reta dose to 15 mg tirz because low-dose reta showed decent loss in studies. Ended at 15 mg tirz plus 5 mg reta and dropped another 13 kg over nine months with less hunger on the combo. Kept side effects low compared with higher reta alone or prior sema experience. Another route is low-dose cagri, though it may bring more nausea or fatigue depending on individual tolerance.

WarmMeadow92archiveApr 4
↳ replying to @BlueTimber11

Yeah, it's a real plateau. Checked the numbers and I'm basically at the same weight as early March, right around when the sema stack ended.

LevelThistle44archiveApr 4

Could always try adding sema again and see how sleep goes.

WarmSparrow60archiveApr 4

What worked for me after plateauing the last 60 days to reach 200 from 280 was dropping from 15 mg tirz to 12.5 mg one week, then 10 mg for three weeks while shifting toward maintenance. Talked myself into needing 20 more pounds, went back up to 12.5 then 15 mg, and lost another 14 lbs in five weeks. Sometimes backing off briefly helps push through the final stretch.

WarmMeadow92archiveApr 4
↳ replying to @LevelThistle44

Sleep who needs it? Trying sema again is worth a shot. The three months I stacked it I dropped 23 lbs; once I stopped, basically nothing since.

SlowLedger42archiveApr 4

Skipping the parts I don't think would land well, the last 20 lbs on a GLP can end up feeling a lot like losing the first 20 lbs before any GLP. No single best method, just different ones that work person to person. Cagri lines up with your approach since it works differently and should let you eat even less. Glucagon activity through a reta-style mix would be next, with added sema helping keep hunger down. Full switch to reta would probably come after because of the chance of stronger hunger returning for a while.

SteadyTimber49archiveApr 4

Adding sema back looks like the strongest option since you already know it worked and have it. Stacking reta is the other one worth trying. Currently stalled on reta myself and planning to add tirz soon. Nice to be able to experiment with combinations.

WarmMeadow92archiveApr 4
↳ replying to @SlowLedger42

Even though we don't always agree on the overall approach, I appreciate the input and agree cagri is the clearest next step for me both physically and mentally. That's why I bought it instead of survo or maz a few months ago. The pH adjustment info helped ease concerns, so now I just need sterile acetic acid. In the meantime planning to restart sema Monday while sorting the cagri. Also interested in tesamorelin later but that would be last since any scale increase would bother me.

LevelTimber64archiveApr 4
↳ replying to @KeenPebble33

If you had survo I'd say try it, but you have two solid choices already: cagri and sema. Since sema worked before, I'd raise that a bit while keeping tirz steady, maybe dosing halfway between or going to 1.7 mg. Also consider changing timing, like full tirz then sema three days later or shortening to a six-day cycle. Currently running a six-day schedule with survo and keeping doses low. Hitting a plateau can create real overthinking, but you've already made good progress.

SlowLedger42archiveApr 4
↳ replying to @WarmMeadow92

A longer list might help others reading but wouldn't fit your situation. It's not personal knowledge, just patterns from spending time in these spaces. People tend to prefer certain strategies based on how they first got into weight loss ideas. Hard to separate real insight from nonsense, so protecting against the nonsense is reasonable. Staying inside a CICO frame brings its own preferences, and I can see why some outcomes would feel unsettling.

ClearSparrow87archiveApr 4

I'm on the other side. Reta has been strongest for me. At 10 mg I could barely eat at first, then it settled. Now at 12 mg it's working well and I've also stacked 8 mg sema. In my experience 4 mg sema feels roughly equal to 12 mg reta.

AmberMarble48archiveApr 8
↳ replying to @AmberMarble48

Tried the 50/50 mix this time and pH landed right around 4.5.

WarmAnchor49archiveApr 8

Reconstituted cagri with BAC for a year. Currently on 12 mg tirz, 2.4 mg sema, and 2.4 mg cagri weekly on different days. Down 110 lbs and at goal. They all work and cagri helps offset the tirz chill.

ClearBramble68archiveApr 8
↳ replying to @QuietAlder25

Did you step through 17.5 mg or jump straight from 15 to 20 mg?

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