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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

20 replies

Jbradley81 · 01/05/2026 17:31

Hi,

has anyone taken a double dose of 2.5 mounjaro and had any major side effects?

OP posts:
dalmationtux · 01/05/2026 17:38

Context?

I had too many 2.5mg pens so took double doses for w while to use them up before buying 5mg but I had been on that 2.5mg dose for a year. You can’t just start with a double dose.

SilenceInside · 01/05/2026 17:45

Yes, would like to know exactly what you’re asking here?

Obviously people take 5mg as the next dose up from 2.5mg, but usually that’s after 4 weeks on the 2.5mg dose to get accustomed to it.

Jbradley81 · 01/05/2026 17:45

Thanks it’s wasn’t on purpose, I thought my first dose didn’t go in properly as the grey plunger didn’t go back to the bottom. Hopefully no major side effects

OP posts:
dalmationtux · 01/05/2026 17:46

Oh your first dose, ever?

Jbradley81 · 01/05/2026 17:47

No my 2nd 🤦‍♀️

OP posts:
SilenceInside · 01/05/2026 17:47

Oof. You might find you get some gastric effects jumping straight in at 5mg, so nausea, D&V and of course you may find that you have very little interest in food.

Jbradley81 · 01/05/2026 17:49

🤦‍♀️🤦‍♀️🤦‍♀️

OP posts:
dalmationtux · 01/05/2026 17:50

Eat as clean as possible and drink plenty water, nothing too fatty or spicy and hope for the best!

SilenceInside · 01/05/2026 17:51

How was your first week? Did you get much appetite suppression on the first 2.5mg dose?

Jbradley81 · 01/05/2026 17:52

eating my meals but don’t feel as hungry in between, had a bit of diarrhoea a few days in but nothing else.

OP posts:
morbidcuriosity · 01/05/2026 18:52

What do you mean the grey plunger didn't go back to the bottom? Confused!

SilenceInside · 01/05/2026 19:01

morbidcuriosity · 01/05/2026 18:52

What do you mean the grey plunger didn't go back to the bottom? Confused!

I think @Jbradley81 was expecting the grey plunger inside the glass vial to go all the way to the red seal end of the pen, in a similar way to a single use syringe where you'd press until the plunger was all the way to the end.

I think the patient information leaflet could be improved by showing diagrams or pictures of what the pen will look like after each dose, to avoid any confusion around how it works.

Scarlettpixie · 01/05/2026 19:01

Watch some YouTube videos and follow the steps in the injections every time. You might have some stomach upset just try to eat clean and little and often. Pepto bismol can help settle your stomach and ginger lozenges are helpful for nausea if needed.

Kitt1 · 01/05/2026 19:02

If you’re worried about it not going in properly, mark the pen where the plunger is with a sharpie before use, then you can see that it’s been used afterwards as the plunger will be a bit further along the tube. I did that with my first pen as I wasn’t confident about the jabbing procedure either.

Rest. Drink lots of water and eat simply. Definitely nothing fatty and ideally simple salads and plain veg with protein to limit the chances of an upset stomach.

Try not to worry. I recommend leaving it 9 or10 days before your next 2.5mg jab as the medicine builds up in your system.

Mounjaro
Kitt1 · 01/05/2026 19:08

Click on the photo above and you’ll see the graph showing you approximately how much MJ is in your system.

morbidcuriosity · 01/05/2026 19:43

@SilenceInsidebut was her 2nd dose thats why I was confused.. OP can you elaborate for us?? .
Im sure you will be ok though, maybe strong supression and a bit quesy but good.

Charlenedickens · 01/05/2026 20:15

Op what do you mean, did you put the needle in and then press the top back to zero ? You primed the needle?

PearlsTeapot · 01/05/2026 21:17

If you have done a 5mg dose essentially I would wait 10 days or so before your next jab as it builds in your system. The 2.5 is to get your body used to it.

Good luck, hope you don't feel poorly.

Kitt1 · 03/05/2026 15:39

@Jbradley81 How are you feeling?

Did you have any bad side effects or are you managing ok?

ChloeBennet · 13/05/2026 18:56

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