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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.

Frequent need to pee after MJ jab

8 replies

Panda1512 · 05/02/2026 18:58

Hi guys,
I'm a newbie to MJ, took my second dose of 2.5 yesterday and noticed today - and last week after my first jab aswell, that I can't stop feeling the need to pee, do other people have this happen to them? Dipped my urine and no uti!

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maz99 · 05/02/2026 19:18

Are you drinking more water than previously?

Edinburghdays · 05/02/2026 19:36

Well mj reduces inflammation and fluid is part of that, I get up loads in the night to pee after taking it.

Panda1512 · 05/02/2026 19:48

maz99 · 05/02/2026 19:18

Are you drinking more water than previously?

No, I've always drank 2L a day more or less!

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Whatstfpoint · 06/02/2026 13:43

Is it just the feeling or do you actually pee more? Weight loss and fat burn do result in more frequent peeing to get rid of the waste products, as well as excess water the body would normally hold on to. I pee like crazy some days and then I know the scales will show a lower number soon.

Panda1512 · 06/02/2026 16:52

Whatstfpoint · 06/02/2026 13:43

Is it just the feeling or do you actually pee more? Weight loss and fat burn do result in more frequent peeing to get rid of the waste products, as well as excess water the body would normally hold on to. I pee like crazy some days and then I know the scales will show a lower number soon.

I'm peeing LOADS like big amounts each time like every hour, my bladder also feels really irritated, there's ketones in my urine but nothing else.

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Whatstfpoint · 06/02/2026 17:06

Panda1512 · 06/02/2026 16:52

I'm peeing LOADS like big amounts each time like every hour, my bladder also feels really irritated, there's ketones in my urine but nothing else.

That sounds like me when shifting the weight. Make sure you eat enough still. You will probably shed loads, no? It may literally be water weight if you are just on the second dose still.

What does an irritated bladder feel like? No idea.

Sometimes I pee before leaving the house and 20 mins later I could go again for a proper wee.

Contrarymary30 · 06/02/2026 17:08

It's quite normal to pass more urine when losing weight . It's nothing to worry about .

Panda1512 · 10/02/2026 20:08

Still ongoing. It actually feels like a uti but isn't apparently

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