Breo Ellipta serious side effects. Tell your doctor right away if you have any serious side effects, including: white patches in your mouth or on your tongue, weakness, puffy face, unusual weight gain, slow wound healing, thinning skin, bone pain, menstrual period changes, mental/mood changes (such as depression, nervousness, mood swings, agitation), easy bruising/bleeding, increased thirst/urination, vision problems, muscle cramps, shaking (tremor), signs of infection (such as fever, persistent sore throat), signs of pneumonia (such as cough, fever, trouble breathing).