Get emergency medical help if you have signs of an allergic reaction to Entresto: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. You may be more likely to have an allergic reaction if you are African-American.
Also call your doctor at once if you have:
a light-headed feeling, like you might pass out;
extreme tiredness;
high potassium - slow heart rate, weak pulse, muscle weakness, tingly feeling; or
kidney problems - little or no urinating, painful or difficult urination, swelling in your feet or ankles, feeling tired or short of breath.
Common Entresto side effects may include:
kidney problems;
high potassium;
dizziness, feeling light-headed; or
cough.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Entresto side effects (more detail)
