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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.

Can I take every 5 days?

8 replies

cobblers00 · 20/01/2026 07:57

I’ve been on mj 2.5mg for 8 weeks. Steady but slowing weight loss, which now hasn’t budged in last 3 weeks. Neither have my measurements. I understand this happens and up to now I haven’t wanted to go up to 5mg as I don’t have any side effects & a maneagable appetite, so I have another 2.5 pen in the fridge ready to go. However I’m wondering if it might help to kickstart things a little if I increase frequency of this dose to every 5 days before ordering a 5mg pen next time. I know the medication has a half life of 5 days. But would it be safe/ effective to take this approach? I’m tracking food & not exceeding my TDEE, exercising well etc but def feel I’m using willpower a lot more & choosing less healthy options than I was at the start of this. I don’t want to be paying out for a medication that isn’t doing much and thus way could prep me for increasing dose to 5mg? I hear some people take 5mg split in two doses over a week so taking 2.5mg every 5 days would be similar to that?? Advice from long termers would be much appreciated. Thank you!

OP posts:
ShrankLastWinter · 20/01/2026 08:07

I did that for a couple of weeks before moving up to 3.75.

Do make sure you’re drinking plenty and eating protein and fibre to maximize the effects of the medication though.

Sweetiedarling7 · 20/01/2026 08:08

I think you just need to increase to 5mg.
You could use up your remaining 2.5mg to do so by taking x2 doses at a time. That is much more likely to be effective than taking 2.5mg every 5 days.

WeAllHaveWings · 20/01/2026 08:33

You can ask your provider, mine suggests moving to 5-6 days temporarily (not long term) if struggling, to finish a pen before increasing dose.

For me the post Christmas period is a little tricky, I still feel the post Christmas cravings and I expect, similar to the previous January it might take until the end of the month to feel fully back to normal.

Kazzaa46 · 20/01/2026 18:23

I just broke a 3 week plateau and increased hunger by jabbing on day 6 for two weeks instead of day 7. No ill effects, started losing weight again. Moved back to weekly now.

PearlTeapot · 20/01/2026 19:17

I'm considering every 6 days cos I can't increase without getting unwell past 3mg.

Lifecircle · 21/01/2026 09:22

I take 3.5mgs every 6 days as I found 5mgs gave me diarrhoea. I have lost all but 7lbs of my goal weight and hoped this way of doing things would do the trick.
I am 1lb up and don't seem to be able to shift it and now need to lose 8lbs before I even contemplate maintenance. I'm hoping it's due to bad habits over Xmas. I think I will give it to the end of the month and possibly graduate up to 5mgs once a week.

cobblers00 · 21/01/2026 10:24

Lifecircle · 21/01/2026 09:22

I take 3.5mgs every 6 days as I found 5mgs gave me diarrhoea. I have lost all but 7lbs of my goal weight and hoped this way of doing things would do the trick.
I am 1lb up and don't seem to be able to shift it and now need to lose 8lbs before I even contemplate maintenance. I'm hoping it's due to bad habits over Xmas. I think I will give it to the end of the month and possibly graduate up to 5mgs once a week.

Interesting. So to do that you count clicks on a 5mg pen, yes? And how many doses does that give per pen? -my maths is terrible!

OP posts:
Lifecircle · 21/01/2026 11:53

cobblers00 · 21/01/2026 10:24

Interesting. So to do that you count clicks on a 5mg pen, yes? And how many doses does that give per pen? -my maths is terrible!

42 clicks is 3.5mgs and 45 clicks is 3.75mgs
I may try 4mgs for my next dose which is 48 clicks.
Hope that helps.

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