Low Blood Pressure (Hypotension): Low blood pressure is most likely to happen if the patient also take water pills, are on a low-salt diet, get dialysis treatments, have heart problems, or get sick with vomiting or diarrhea.
Kidney problems: Kidney problems may get worse in people that already have kidney disease. Some people will have changes on blood tests for kidney function and may need a lower dose of valsartan.
The most common side effects of Valsartan used to treat people with high blood pressure include: headache, dizziness, flu symptoms, tiredness, stomach (abdominal) pain.
The most common side effects of Valsartan used to treat people with heart failure include: dizziness, low blood pressure, diarrhea, joint and back pain, tiredness, high blood potassium.
Common side effects of Valsartan used to treat people after a heart attack: low blood pressure, cough, high blood creatinine (decreased kidney function), rash.
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