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Weight loss injections/treatments

Discuss weight-loss injections and treatments, including personal experiences. Mumsnet hasn't checked the qualifications of anyone posting here. You may wish to speak to a medical professional before starting any treatments.

Mounjaro how do you do yours ?

12 replies

randomgeneratedusername1 · 09/09/2025 14:42

I have just had my 12th dose of 2.5mg mounjaro and weight loss has been very slow and steady which I’m ok with but it has stalled over the past 2 weeks . Feeling slightly more hungry now not massively but it’s there . Slightly more tempted than I was but willpower is mostly doing ok. My question is for those of you who take the 5th dose do you have a larger dose then go back to your usual dose. Or do you only increase when you’re going to move up. I am wondering as it stays in the system that a little boost dose my get things moving again. I am hoping to stay on 2.5mg as long as possible for the duration if I can . Would love some input . If you’re against using the remnants of the pen it’s fine . I do use it and will continue to as I was informed about it and backed by my doctors surgery. TIA 😊

OP posts:
Yellowsubmarine55 · 09/09/2025 14:51

Not sure you will get more than the 0.6ml from the remaining but I just take the dose equal to the 2.5 and nothing more.

RenegadeKeeblerElf · 09/09/2025 15:09

I've only finished one pen so far (next dose will be a second bonus dose) but I took whatever was in there, which I think was slightly over the 2.5mg. I figured there was no point wasting it, and like you say it might give an extra boost, and also give me an idea about increased symptoms of I choose to go up.

randomgeneratedusername1 · 09/09/2025 15:10

Yellowsubmarine55 · 09/09/2025 14:51

Not sure you will get more than the 0.6ml from the remaining but I just take the dose equal to the 2.5 and nothing more.

Thank you for replying. Usually when I take the 5th there is substantially more than my 2.5mg so wondering what others do. I only know 1 other person who does it and she only takes the 2.5 mg .

OP posts:
indoorplantqueen · 09/09/2025 15:23

How do you get the last dose out? Mine wouldn’t twist anymore and I tried to use pliers and that wouldn’t work!

SilenceInside · 09/09/2025 15:36

@randomgeneratedusername1 when I am on a static dose, as I am currently on 10mg, I tend to just take 0.6ml and do another standard dose. I have done 0.8ml before going away for a week as I knew I would be postponing my next injection by a few days due to being away and not wanting to take the pen with me, so I took a slightly higher dose.

On the occasions that I was stepping up a dose, then I have taken an interim dose as a step up, usually 0.8ml.

SusanSometimes · 09/09/2025 15:45

I've always used the fifth dose. If I'm staying on the same dose I use 0.6ml from the remaining liquid in the pen, but when I felt ready to move up from 2.5mg I did 3.75mg by extracting 0.9ml.

I've been on MJ for five months now, moving up doses very gradually. I moved up from 2.5mg after ten weeks, did 3.75mg for six weeks, then one week of 4.5mg and the last seven weeks have been at 5mg. I've two more 5mg pens in the fridge, bought before the price increases, so no plans to move up yet.

If it keeps working I will stay on 5mg - my weightloss is slow and steady which I'm happy with, around two stone so far.

RenegadeKeeblerElf · 09/09/2025 16:12

I wonder whether it would work to just take the 0.6ml, then if there is more, save it to the following week (although that would mean going over the 30 days), then combining whatever is left with some from the next pen (using a syringe to extract). You should then be able to do 4 normal doses then potentially have another bonus dose left at the end of if not quite enough can add a bit from the next pen again. Does that make sense?

IsItSnowing · 09/09/2025 16:32

I've been using the 5th dose for a while now. I just take the remaining liquid out to just over 60ml - enough to prime it to get any air bubbles out - then inject 60ml. So the same dose as the others.

WeAllHaveWings · 09/09/2025 17:18

I use the remaining liquid to take the same dose as my current dose.

I don't see the point in taking more for one week only potentially risking side effects, having inconsistent blood sugar control making it harder to track how the medication is working for you, perhaps affecting tolerance and feeling less effects when you go back to 2.5mg (actual or perceived).

A tiny bit of remaining liquid after the 5th dose is not a "waste" if you get your extra week.

IReallyNeedThisToWork · 10/09/2025 07:02

I have had 0.8ml out of all of my (15) pens so far! I did tend to take the whole lot when on lower dose pens as I couldn’t bear the idea of throwing it away! On higher dose pens, I did not as I didn’t want to go up so much.

FurForksSake · 10/09/2025 07:06

This is going to be moot very soon as they’ve confirmed they are decreasing the liquid in the pen.

I am on 12.5 and at the very end of my journey of losing and am basically maintaining on this dose. I take a little extra in my fifth dose but I inject every 8-9 days. I might start counting clicks to get 5 doses from a pen, effectively reducing my dose when the new pens start to go into circulation.

RockChik · 11/09/2025 14:26

@indoorplantqueen you can extract the 5th dose using a disposable insulin needle/syringe. Insert the needle into the end of the red bung and slowly draw out a bit more than 0.6ml, then prime the syringe as usual (hold upright and tap the syringe then eject some MJ up to the 0.6ml line) and inject. I use these:
1ml/cc 32G 6mm Plastic... www.amazon.co.uk/dp/B0DDKQ93LR?ref=ppx_pop_mob_ap_share

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