Get emergency medical help if you have signs of an allergic reaction to Farxiga: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Seek medical attention right away if you have signs of a genital infection (penis or vagina): burning, itching, odor, discharge, pain, tenderness, redness or swelling of the genital or rectal area, fever, not feeling well. These symptoms may get worse quickly.
Call your doctor at once if you have:
little or no urination;
dehydration symptoms - dizziness, weakness, feeling light-headed (like you might pass out);
kidney problems - little or no urination, swelling in your feet or ankles, feeling tired or short of breath;
ketoacidosis (too much acid in the blood) - nausea, vomiting, stomach pain, confusion, unusual drowsiness, or trouble breathing; or
signs of a bladder infection - pain or burning when you urinate, increased urination, blood in your urine, fever, pain in your pelvis or back.
Side effects may be more likely to occur in older adults.
Common Farxiga side effects include:
genital yeast infection;
urinating more than usual; or
sore throat and runny or stuffy nose.
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.
 Farxiga side effects (more detail)
