Becca Jane St Clair

I’ve now been on Mounjaro for three months and honestly, everything is going fantastic. I was on 5mg again this month, increasing to 7.5 for month 4. I barely have needed to write down any new or strange side effects, though I’m still experiencing things like diarrhoea and burping, though not to the extreme of needing anything other than a swing of Pepto.

At my appointment, we went over the results of the blood test, and even though it’s still high, it was a positive downward move by nearly 50%. So we’re happy with that, but we did decide to increase my dose to 7.5mg and then see where we’re at. Obviously, at any time I can go back down to a lower dose if I find the side effects too much to manage. I’m also going to be adding dapagliflozin after we get back from our holiday in June to see if that helps.

I also wanted to address some of the misconceptions around getting prescribed Mounjaro on the NHS for the treatment of Type 2 Diabetes. From the NHS:

In line with NICE technology appraisal (TA) 924, Tirzepatide is recommended as an option for treating type 2 Diabetes in adults, alongside diet and exercise, only if blood glucose is inadequately controlled and:

Triple therapy with metformin and two other oral antidiabetic drugs is ineffective, not tolerated, or contraindicated, and
The patient has a BMI of 35 kg/m² or more with specific psychological or other medical problems associated with obesity, or
The patient has a BMI of less than 35 kg/m², and:
Insulin therapy would have significant occupational implications, or
Weight loss would benefit other significant obesity-related complications.

And there also is no cap on the dosage. If you need to go up to 15mg to get your Diabetes under control, you will go up to 15mg. They won’t, however, increase your dose for the sake of weight loss if your blood sugar is controlled with a lower dose.

The guidelines for getting Mounjaro for weight loss on the NHS are as follows:

Have a body mass index (BMI) of 40 kg/m² or more (or 37.5 kg/m² for people from minority ethnic family backgrounds)
and

Have at least four of the following long-term conditions:

1. Type 2 diabetes
2. Hypertension (high blood pressure)
3. Dyslipidaemia
4. Established cardiovascular disease
5. Obstructive sleep apnoea

So you can see where the confusion has come from and where some people are misinformed. It’s also weird that T2 is one of the conditions for getting it for weight loss, but presumably, this is if your T2 is controlled with another drug and you didn’t need mounjaro for controlling it.

I had a long discussion with Fiona about this, because of what people had been telling me were the criteria and knowing I didn’t fit them. It turns out, they were telling me the criteria for using it for weight-loss and not T2. She assured me that I am eligible for it and there is no danger of me being told that I can no longer have it in the future. It will, however, always be my choice if I stay on mounjaro or try something else, but since Metformin stopped working and this is, I can’t see myself stopping.

The other new thing is that I am now testing my morning (fasting) blood glucose level. This is primarily to monitor how well the mounjaro is doing since I am currently not in danger of hypos. I forgot to ask Fiona how to use the monitor though, so I had to go in and see a different nurse the following day. She suggested I could test 4 times per day and keep a food diary to see what foods affected me, but it wasn’t required and considering my problems I had with Slimming World stemmed from all the tracking, I’m not going to do that unless Fiona tells me that I absolutely have to.

There also was no new weight loss this month, which is a little discouraging, but I’ve lost additional inches off my bust, belly, and hips. Fiona thinks the 7.5 will help with losing a bit of weight. Again, I’m not aiming to lose, but it would be a happy side-effect for sure.

Roll on month 4. I might not do weekly updates for 7.5, because I will be away for weeks 3 & 4, but I will make a four month post.

***

Sources Used:
Tirzepatide (Mounjaro®) for obesity: Information for patients from 1 April 2026

The contents of this post, including images are © Rebecca J Lockley and Tim Lockley unless otherwise stated and should not be reproduced without permission.

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Previous Posts about Mounjaro:
Mounjaro for Type 2 Diabetes
Mounjaro for Type 2 Diabetes Week One
Mounjaro for Type 2 Diabetes Week 2
Mounjaro For Type 2 Diabetes Week 3
Mounjaro for Type 2 Diabetes Week 4
Mounjaro After One Month
Mounjaro for Type 2 Diabetes Week 5 / Week 1 5mg
Mounjaro for Type 2 Diabetes Week 6
Mounjaro for Type 2 Diabetes Weeks 7&8
Mounjaro for Type 2 Diabetes 2 Months On