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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.

Using 5mg pen for 10mg

10 replies

TheMJFairy · 17/09/2025 09:03

I have a 5mg pen which expires in February next year. I am currently on 10mg and still have a few stone to lose and am worried about timings. I am a slow loser.

Has anyone here combined doses? I am planning on taking two five MJ at a time. I know this means the pen will only last a couple of weeks and I will be unable to use the 5th jab but I think that’s better than throwing the pen away.

once I reach goal I will come down slowly.

OP posts:
Woompund · 17/09/2025 09:05

Of course that's fine, why wouldn't it be? Just change needles between jabs even if you do one after the other

Seahorsesplendour · 17/09/2025 09:05

Hiya I took a 10mg dose from 7.5mg pen as suppression had disappeared towards my second month on 2.5 I then kept the last little bit to top up at a later date!

all worked fine

Seahorsesplendour · 17/09/2025 09:05

On 7.5 that should have said sorry not 2.5!

TheMJFairy · 17/09/2025 09:12

Thanks I just didn’t want to be in a position of having to throw a pen away given the recent price hikes

OP posts:
Seahorsesplendour · 17/09/2025 11:26

Ditto!! I used the insulin syringe to draw up the bigger dose this is useful!

www.vrgrowth.co.uk/mounjaro-clicks

Fedupbeingfat · 17/09/2025 15:34

I was in exactly the same position and doubled up!

morbidcuriosity · 17/09/2025 15:45

I had a spare 5mg pen.. when I was on 10mg. I did 10 Monday, then 2.5 from the 5mg Thursday, then 1o again Monday and kept doing that to top up to 12.5mg.
I did use the 5mg pen for 10 weeks, but kept in fridge, was just a little boost I needed to get the last few lb off..

Or you could do your 10 and 2.5 from the 5mg the same day if you fancy moving straight up to 12.5..

Just a thought for you.

TheMJFairy · 17/09/2025 15:51

That’s an idea @morbidcuriosity I wasn’t planning on buying any 12.5mg just because of the cost. But this could be a way of doing 12.5 in a more cost effective manner for a number of weeks.

OP posts:
TheMJFairy · 22/09/2025 21:44

So @morbidcuriosity I took 12.5mg made up from a 10mg pen plus 30 clicks from the 5mg pen yesterday.

Hopefully it will give me the boost I need to get me closer to the finish line.

OP posts:
morbidcuriosity · 23/09/2025 08:02

I was happy to use mine for the 10 weeks, kept in the fridge I think I did 12.5 one week on same day like you, but then going forward I did the 2.5 extra mid week as a little top up.. seemed to work fine.
Fingers crossed it works for you, I'm now back to 10mg once a week.

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