Nifedipine controlled release tablets do not cause foamy urine, on the contrary, due to the possibility of controlling blood pressure, nifedipine can reduce kidney damage. Specific medication needs to follow the doctor’s instructions. Nifedipine is a calcium antagonist that lowers blood pressure. Nifedipine causes little or no damage to the kidneys and therefore does not cause foamy urine. Adverse reactions of nifedipine mainly include peripheral edema, dizziness and nausea, hypotension, constipation, diarrhea, muscle cramps, etc. A few cause hematologic reactions, such as anemia, leukopenia, etc., and there is almost no kidney damage. It is strictly prohibited for patients who are allergic to nifedipine. On the contrary, nifedipine can reduce kidney damage caused by hypertension by controlling blood pressure. High blood pressure can cause damage to the blood vessels of the kidneys, which in turn causes such as foamy urine, proteinuria, and so on. Nifedipine can dilate blood vessels and reduce the damage to kidney blood vessels caused by high blood pressure. Specific medication should be used according to the doctor’s instructions.