Asthma: throat irritation, headache, upper respiratory tract infection, throat pain, sinusitis, flu, back pain, nasal congestion, stomach discomfort, vomiting, and thrush in the mouth and throat. APPROVED USES. COPD: SYMBICORT 160/4.5 mcg is used long-term to improve symptoms of chronic obstructive pulmonary disease (COPD), including chronic ....