You should not use  Kayexalate if you have low potassium levels or a bowel obstruction.
Do not give this medicine orally (by mouth) to a newborn baby.
Avoid taking other medicines by mouth within 3 hours before or 3 hours after you take Kayexalate (or 6 hours before/after if you have slow digestion).
Before taking this medicine
You should not use Kayexalate if you are allergic to it, or if you have:
low potassium levels (hypokalemia); or
a bowel obstruction.
Tell your doctor if you have ever had:
heart disease or high blood pressure;
a weak immune system caused using certain medicine;
severe constipation or other bowel problems;
kidney disease (or if you are on dialysis);
an electrolyte imbalance (such as low levels of potassium, calcium, or magnesium in your blood);
fluid retention;
severe burns;
a bowel disorder, or surgery on your intestines;
if you are dehydrated; or
if you are on a low-salt diet.
Because Kayexalate is not absorbed into the bloodstream, this medicine is not expected to be harmful during pregnancy or while nursing a baby. Tell your doctor if you are pregnant or breast-feeding.
