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Weight loss chat

A space to talk openly about weight loss journeys and challenges. Mumsnet hasn't checked the qualifications of anyone posting here. You may wish to speak to a medical professional before starting any diet.

Did Mounjaro 5mg not work for you?

7 replies

GoingDownDown · 01/06/2024 20:32

I’m on week 7 of Mounjaro, at 5mg. So far…no effect. At 2.5 I had no side effects. At 5 I’ve found that the two days after the shot I am absolutely exhausted - the first week I had to go to work and I ended up having a nap in my car on my lunch break - the second I was home with the kids and had to let them watch TV most of the day because I could barely stay awake. I could probably work around this, were it not for the fact that I get no impact on my appetite! Also some nausea, but not terrible.

Has anyone found 5 didn’t work for them but 7.5 did? I’ve got the rest of this 5mg pen to go and I’m wondering whether it’s worth trying 7.5 or not.

I tried Wegovy, on that I had horrendous side effects, did feel the appetite suppression but was vomiting constantly so that was not sustainable.

OP posts:
Southeastmamaof2 · 25/06/2024 22:41

Yes! I had terrible side effects on Wegovy so switched to Mounjaro. 2.5mg did nothing. I actually put on weight at 5mg but this is my first week of 7.5mg. I am down 3lbs since injecting 5 days ago. Have you continued your Mounjaro journey?

MysticMole · 23/08/2024 17:02

I lost 4kgs on 2.5 with no side effects but 5mg Mounjaro seems not to be working for me and I have had a few stomach upsets / episodes of nausea. Currently on week 7 of 5mg but with an accidental break as I forgot to take my pen on holiday. I feel a bit disappointed with 5mg tbh though the side effects are minimal and manageable - weight loss plateau though.

Ds65 · 30/08/2024 08:54

MysticMole · 23/08/2024 17:02

I lost 4kgs on 2.5 with no side effects but 5mg Mounjaro seems not to be working for me and I have had a few stomach upsets / episodes of nausea. Currently on week 7 of 5mg but with an accidental break as I forgot to take my pen on holiday. I feel a bit disappointed with 5mg tbh though the side effects are minimal and manageable - weight loss plateau though.

I am on week 3 of 5mg and have only lost a few pounds since starting 8wks ago. Definitely eating a lot less and no real appetite but still no real weight loss. Will order 7.5mg for the next month but then will sack it. Very expensive to not lose...😣

Hangryjinkyboy · 08/07/2025 18:48

5mg and 7.5 wernt great for me tbh. 2.5 and 10 great. The fatigue is my only side affect now. Loads at beginning..

blunderdul · 08/07/2025 18:58

Have you not changed your diet at all?

EwwwwwwDavid · 08/07/2025 21:06

Nope, I had to get to 12.5 before it started working

now 11lbs down in three weeks

Hangryjinkyboy · 09/07/2025 08:56

My diet was always good i just ate too much . Same size dinners as hubby. I snacked and popped into greggs when shopping or kfc. I cut snacks out and smaller portions. Lost 3.7 st. But tons of inches , i have visible bones lol

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