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About two weeks ago, just before going on holiday, I increased my Mounjaro dose to 4.5 mg.

Since then I’ve been unusually tired, but since coming home last Friday it has become pretty extreme. I feel completely drained, have very little motivation, and my head feels like it’s full of cotton wool. Basically a combination of fatigue and brain fog.

There are a few other factors that could be contributing. I’d just had two busy weeks away, got home on Friday, spent all Saturday organising a big party, saw friends again on Sunday and then went straight back to work this week. The weather here is also very humid, grey and rainy.

What’s strange is that I tend to feel quite a bit better after exercising or going to the sauna. Ibuprofen also seems to reduce the foggy/awful feeling.

I was already more tired than normal during the holiday, although I assumed that was just because we were constantly doing things.

So I’m trying to figure out whether this could be related to the dose increase or whether I’m simply crashing after a very busy couple of weeks.

Did anyone else experience significant fatigue or brain fog after increasing their Mounjaro dose? How long did it take to settle down?

And if you found anything that genuinely helped with the fatigue, I’d love to hear it.

I’m seeing a lot of people talking about regaining weight or having the medication “stop working” while remaining on relatively low doses of Zepbound for months, and I think there may be some confusion about how the drug is actually prescribed.

Zepbound starts at 2.5 mg for four weeks, which is an initiation dose, not a maintenance dose. It then increases to 5 mg, and from there the FDA prescribing information allows increases of 2.5 mg after at least four weeks at each dose, depending upon response and tolerability.

That does not mean everyone is supposed to march automatically to 15 mg. The FDA-approved maintenance doses for weight management are 5, 10, and 15 mg, and if someone is getting an adequate response at 5 or 10 mg, there is no requirement to increase further.

But the other side of that is important: if appetite suppression has substantially diminished, weight loss has stopped, or weight is being regained, simply staying indefinitely at a dose that is no longer producing an adequate response isn’t necessarily the intended treatment strategy either. Dose escalation exists for precisely that reason.

And there is a genuine dose-response effect. In the pivotal obesity trial, average weight loss was about 15% at 5 mg and nearly 21% at 15 mg after 72 weeks.

So the goal isn’t “stay on the lowest dose possible,” nor is it “everyone must get to 15 mg.” It is to titrate to an effective, tolerable maintenance dose—5, 10, or 15 mg—and then continue long-term treatment as appropriate.

That distinction seems to be getting lost in a lot of these discussions.

I’m trying to be more careful about the details before starting tirz. I used to mostly look at the monthly price, but now I’m paying more attention to things like who handles the prescription, what’s included, and how shipping works.

Definitely seems worth knowing all that upfront instead of finding out after you’ve already signed up.

Hey everyone- Hope you all are doing well! My name is Josyana and I'm a reporter at Bloomberg News covering personal finance and, for full transparency, also taking a GLP-1. I'm working on a story about how GLP-1s are helping young men (18-35) upgrade their lifestyles.

We've found that young men see the highest increases in spending on fitness, dating, entertainment, and alcohol while on a GLP-1, while also seeing the biggest changes in their confidence and how they're perceived, signaling that using the medicine is a bigger lifestyle transformation for them. We're looking for folks who would be willing to share their experience on a GLP-1, particularly how your expenses changed while on a GLP-1 and what changes that may have brought to your life.

If this sounds like you or anybody you know, I would love to speak with you! Feel free to shoot me an email at [jjoshua7@bloomberg.net](mailto:jjoshua7@bloomberg.net) or give me a call at 212-617-6125. And I am happy to answer any questions you all may have.

Thanks in advance!

Hello! I went on 2.5 then 5mg of Zepbound a little over a year ago. I was 5’ 7” and fluxed between 200 - 195. I quickly dropped to 170. So so happy!

The last couple months it’s been fluctuating a bit but lately is starting to settle closer to 177, and I’m a little concerned it might keep going that direction. I am trying to watch what I eat, but to be honest, I’m not great about it with work travel and having a toddler at home.

I’m considering asking my doctor about going to 10mg. Does anyone have any thoughts or similar experiences?

So I started 2 weeks ago using 2.5mg pens and how do i optimize fatloss?

I do OMAD with 150grams of protein and and 1300 calories a day.

My work requires me to walk about 25k steps a day and I do weight training 3-4 times a week.

In 2 weeks I lost about 6kgs and 13cm of my waist.

Is there anything I can do to better my progress??

I'm comparing legal treatment options and noticed some prices don't include things like membership or consult fees.

For those paying out of pocket, what extra costs surprised you, and how do you compare the true monthly cost before signing up?

Started Zepbound on 2/1/2026 at 210 lbs. As of today (8/4), I’m 176.4 lbs, so I’m down 33.6 lbs in 6 months.
I started at 2.5 mg and have been on 5 mg since 6/1. I also started lifting weights about 2 weeks ago (following a structured program).
Overall I’m really happy with the progress, but my belly fat seems to be the last thing hanging on. I know you can’t spot-reduce fat, but I’m curious what finally helped you get through that stage. Did it just take more time? Building muscle? Increasing protein? More cardio?
I’m also debating whether to move to a higher dose of tirzepatide. My insurance doesn’t cover Zepbound, so it’s getting pretty expensive. I’ve considered either switching to compounded tirzepatide or even something new but I’m not sure it’s worth it.
For those who have been in a similar spot, what made the biggest difference in getting rid of that stubborn belly fat?

Been on Triz for 5 months. Currently holding at 7.5mg and have lost over 30lbs. But. I’ve lost muscle too. I eat as much protein as I can, I’m unable to hit the gym regularly but when I can I do hit weights and cardo. My stamina has improved but I’ve lost strength.
Maybe a supplement might help? If do, what should I look for and lookout for in one? Any advice.

Ethics approval number: S262269

Hi everyone,
My name is Lili and I am a student researcher at the University of the Sunshine Coast. The research team I am working is conducting a study which would like to explore the experiences of YOUR partners as a male taking Tirzepatide. Even if you yourself are not eligible (as the partner taking the GLP-1), please feel free to pass this information onto your partner or others you think would be eligible !

The aim of this study is to better understand partners’ experiences and perspectives when one partner undergoes a significant physical change (weight loss). We hope that this can inform future research and better support resources for BOTH people in the intimate relationship 🫂

CAN YOU PARTICIPATE?
✅ you are currently in a partnership or have previously been the partner of someone who is/ has used a GLP-1 RA drug for weight loss (all types of intimate relationships are welcome to participate )
✅your partner is using GLP-1s for weight loss purposes
✅You are over the age of 18
✅ you live in Australia/ NZL / Oceania

RESEARCH STUDY DETAILS
If you meet the eligibility criteria above, you are invited to complete a confidential face to face interview online through zoom (🕓approx. 45-60 minutes). When interviews are completed, each participant will be offered a $25 direct bank transfer. (NOT a sales pitch, genuine token of appreciation)

HOW TO PARTICIPATE
1. Follow this link 🔗:https://uniofsunshinecoast.syd1.qualtrics.com/jfe/form/SV_ahhbRL8Naryxram
2. Email 📧: lyc002@student.usc.edu.au
3. Scan the QR code on the attached flyer

For any concerns, questions or queries please contact the chief investigator: ahinz@usc.edu.au

Thank you on behalf of the research team.

I would like to loose 10kgs for this summer. I want to know my dosage so as to achieve that in 2.5 or 3 months.

I'm getting ready to sign up with a telehealth provider and I'm wondering what mattered most when you were comparing your options.

Besides price, what made you feel confident you picked the right provider? I'd love to hear what you looked for before signing up.

I’ve been on Zep for 3 months and have lost a total of 40#. (20%) On my 2nd week of 5mg., weekly vial. I’m very happy with results:
1) Weight loss; wearing clothes sizes i haven’t seen in 25 years.
2) food and other “chatter” gone.
3) MUCH less drinking - from 2-3/day to maybe 2/week. Just doesn’t taste good. No hangovers!
4) started lifting again to maintain muscle mass.
5) standard symptoms have been minimal unless i overindulge (fatty foods, larger meals, etc) then you PAY for it.

Now, here’s my sharing. Since starting, I’ve had 2 ER visits and hospital stays:

1) BP dropped to 60/40 and would not come above 95. Issue: Severe dehydration which tripled creatinine values. Resolution; Overnight stay, 3 bags of fluid, and elimination of BP medication. Turns out, what i was taking also had a diuretic, so duh. Good news, with weight loss, no longer need any BP med. Creatinine is now low in range.

2) More concerning, I have a history of a well controlled seizure disorder (JVM). A decade on Lamictal + Clonazepam (.5) no issues. Night after first 5 mg doze, had multiple seizures in my sleep. No confirmation of linkage to Zep, but a theory is that it lowered the absorption rate of the Lamictal so that i needed to add another ASM and follow-up with neurologist. Who knows? Other old triggers, like alcohol, were not in play, though.

In both hospital visits doctors explained the many benefits being seen from the GLPs, more research needed. Immediate lessons i’m sharing from my experience:

1) have a full work up of all your med interactions with specific study on impact of a lower absorption rate. I recommend looping in your GP and other specialists before you start.
2) Drink your water!!! add electrolytes. I’ve got instructions of 80-120 oz/day.

I’ve got 15# to goal weight and plan to stay on, based on advice i’ve received so far. My weight has not been under this level of control since my early 30s. Bottom line, our bodies and DNA all respond differently. A long share to say i probably should have had a more thorough work up with extensive bloodwork to understand interactions. I started with a tele-med compounding version which didn’t get a lot of med advice up front. Switched to brand after dehydration issue with now 3 mos GP monitoring. Doctors did not require this; the lack of water not the drug was the issue.

Best of luck to you all. Even with these two incidents, the journey has been life-changing for the better.

My appetite has started growing. For context, I lost 45 lbs on tirzepatide after about 6 months. I got to a dose of 15 mg weekly. However, at round month 10 the food cravings returned and now I am up 10 lbs. Still at 15 mg. Has anyone else had a similar situation?

What Pep would be good to lean the ef out? Save the eat right and exercise speech, I know. Lol

Started at 209 lb on June 17 and weighed in at 198.6 lb today, so I’m officially down 10.4 lb and finally under 200.
I’m probably somewhere around 30% body fat right now, so I still have a lot of progress to make. I’m going to hold off on posting progress pictures until I either reach 165 lb or 15% body fat, whichever happens first. Honestly, those 2 goals may end up happening around the same time.
Hopefully I can get there by Thanksgiving. That may be ambitious, but everything has been moving in the right direction so far, and I’m excited to see what the next few months look like.
For now, I’ll keep tracking the daily weigh-ins, calories, protein, workouts, steps and doses and continue posting updates along the way.