Farxiga can cause serious side effects including dehydration, urinary tract or genital yeast infections in women and men, and low blood sugar. ketoacidosis is a serious side effect that may lead to death. a rare, life-threatening bacterial infection in the skin of the perineum could occur. stop taking farxiga and call your doctor right away if you have symptoms of this bacterial infection, an allergic reaction, or ketoacidosis. and don t take it if you are on dialysis. take aim at chronic kidney disease by talking to your doctor and asking about farxiga. if you can t afford your medication, astrazeneca may be able to help. far-xi-ga don t settle for products that give you a sort-of white smile. try crest whitening emulsions. to help. .for 100% whiter teeth. its highly active peroxide droplets. .swipe on in seconds. better. faster. 100% whiter teeth. shop crestwhitesmile.com.