This is Dr. David
I am sorry your wife is having diarrhea.
she needs to take in both fluids and sodium to help her blood pressure and her sodium levels to go up
she can add salt to her water or drink salted sports drinks like Gadorade
she can also salt her foods and take in more salt in her diet.
if she just drinks plain water, this can drop her sodium levels
but if she eats more salt in her foods this can help bring up her salt levels and help bring her blood pressures up.
she can also use anti-diarrhea medications like Imodium to slow her bowels down
she should avoid raw fruits and vegetables which can worsen diarrhea. if she wants to eat these, she should eat cooked fruits and cooked vegetables.
foods like bananas, rice, cheese, breads can constipate her as well and she can eat those to try to slow down her bowels.
let me know if you have other questions.
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