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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.

Dosing 3.75mg from a 5mg pen

8 replies

Tranquilitybaby · 04/07/2025 11:21

due to side effects on the 5mg, I’m trying 3.75mg instead which is much better.

does anyone know if the pen only delivers four doses via the click method regardless of how how many clicks you do? I’ve obviously only been doing 45 clicks so wasn’t sure if I could continue to use the pen directly or if I need to use a seperate syringe now I’ve done four doses? Thanks

OP posts:
SilenceInside · 04/07/2025 11:25

It's the number of clicks not the number of times you've used it. Normally it's 4 x 60 clicks, or 240 clicks. You can do 5 doses at 45 clicks (5 x45 is 225) without needing to use separate syringes.

bert3400 · 04/07/2025 11:29

I've been doing the same, 45 clicks on a 10mg pen gives me 7.5ml. I've been doing this for 6 months as the pens are so expensive so it lasts a bit longer and I know I'm not meant to but it works for me 😁

Tranquilitybaby · 04/07/2025 12:26

Thanks so much both of you. I wasn’t sure so wanted to check as fifth dose is this weekend.

OP posts:
PricklyLikeCactus · 04/07/2025 13:34

Can someone do the maths for me for a 7.5mg pen? I tried going up but it’s too high a dose so would prefer to drop back down to 5 and don’t want to waste the rest, one jab done already. I’m scrambling my brain trying to work out what dose would be in the remaining clicks divided equally 😂

SilenceInside · 04/07/2025 13:46

@PricklyLikeCactus what exactly do you want to work out? Did you mean what if you divided the remaining clicks in the pen equally?

So that would be 240 - 60 for the full dose you've already done, giving you 180 clicks remaining. 180 divided by 4 would be 45 clicks, so you could do another 4 doses of 45 clicks which is 5.625mg per dose. Does that help?

PricklyLikeCactus · 04/07/2025 13:56

SilenceInside · 04/07/2025 13:46

@PricklyLikeCactus what exactly do you want to work out? Did you mean what if you divided the remaining clicks in the pen equally?

So that would be 240 - 60 for the full dose you've already done, giving you 180 clicks remaining. 180 divided by 4 would be 45 clicks, so you could do another 4 doses of 45 clicks which is 5.625mg per dose. Does that help?

That is perfect, thank you, exactly where I was trying to get to 🙏

TreesOfGreen99 · 05/07/2025 07:22

Another way of calculating

60 clicks = 7.5 mg
60/7.5 = 8 clicks
So 8 clicks = 1 mg
(check 8x7.5=60)
5mg =5x8 clicks =40 clicks

Mich57 · 05/07/2025 07:36

Thanks for this post at exactly the right time! 😁
I'm waiting for my 5ml after 2 sessions on 2.5ml... not sure I want to go straight onto 5ml so 3.75 is perfect 👌🏻 45 Clicks.... On it 🙏🏻😘

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