I do not take diuretic. Sometimes at night I have had dry mouth, but that is likely part of Sleep Apnea treatment. Dry Mouth can be related to stomach acid which drifts up esophagus. I take Mounjaro, and it is more like constipation is part of the use of Mounjaro. At least for me.
I used to have a friend. The year after he had Open Heart surgery, his weight had gone up 80 pounds. He was furious in that; He said this weight gain was all water. He said, his weight gain was a common side effect of open heart surgery patients. His Cardiologist ignored him.
Medical doctors, Cardiologists use the standard of water is only on ankles, rarely on abdomen. If it was on abdomen it would show up because the doctor can press his finger on the abdomen, if the skin/tissue stays depressed - it is too much water, If the skin tissue resumes its original shape, it is not water, but body fat.
This quick test is wrong. wrong wrong.
Give a doctor a quick test, and they can not consider further. What is infuriating, as in this case, the fellow ends up in ER with weakness, have fallen. Congestive Heart Failure. Then the doc will discover that the patient has too much fluid on his body. IV diuretic. In like four days the patient loses forty, sixty, seventy pounds of water. Still send the patient home with thirty pounds of water on body.
Problem also is: Cardiologists make the same mistake over and over and over again. They can do Catheterizations. Surgeries. and do spectacular saves of patients brought to the ER with Congestive Heart Failure. but manage heart diseases during the rest of the time. Too Busy.
For a long time the presumption was that, given the percentage of time I had high blood glucose, therefore it had a dehydrating effect on my body. Which is sorta true, unless I have kidney disease. And used to be, during the day my body dumped a lot of fluid.
Diuretics make diabetes worse.
Likely my kidneys were further damaged by bacteria, while taking Jardiance. And doctors who will not prescribe antibiotics. In truth, Antibiotics in the tetracycline class are not likely to develop "antibiotic resistance" because of how they work. Doctors have their own myths that have nothing to do with real science.
The fellow who was angry about his "obesity" problem. Said, "Doctors would not listen. Ruined his health and his enjoyment of life."
In my case, my doc once said my kidney numbers looked a little off. Sent me to a kidney specialist, who did not see enough evidence for him to do anything. It is scary being in a waiting room with people who do Dialysis.
EDIT: By the way: Protein from low carb is not good for kidneys, once one gets to kidney problems. Consider: Low Carb High Fat will not much take water off ones body. Doctors educate the public: Anything to call me fat and lazy, and blame my body size on me.