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Feeling faint, dizzy, tired, pale etc — could this be Mounjaro side effects?

1 reply

IcyUmberCrow · 25/08/2025 13:54

Hi all,
I’m on Mounjaro (tirzepatide) for weight loss and have been doing okay on it, but recently I’ve started feeling really off — and I’m wondering if it could be a side effect?
Basically, I feel tired all the time, dizzy/lightheaded (especially when I sit or stand suddenly), really pale-looking, and my lips are constantly chapped no matter how much water I drink. I've also had this dull, persistent headache that just sits around my whole head. It’s not painful exactly, just always there. Sometimes I get this weird faint feeling like I might just keel over

I haven’t changed anything else (diet, meds etc.), and I’m eating (though less than usual because of the appetite suppression). I’m wondering if it’s:

  • Low blood sugar?
  • Low blood pressure?
  • Dehydration?
  • Vitamin deficiencies from eating less?
  • Something else entirely?
Has anyone else had this on Mounjaro? I'm on [insert dose here if you want to be specific], and this started [roughly how long after starting]. I've got a GP appointment next week, but would really appreciate any input in the meantime. Thanks in advance xx
OP posts:
Thebigonesgetaway · 25/08/2025 13:59

Could be both low blood pressure and low blood sugar, I used to keep glucose tablets handy, dextrose, get in any supermarket or Amazon, sorted it out immediately, now my body is used to the drug I dint get it anymore.

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