what's in your wallet? ...one of many pieces in my i havlife.hma... so when my asthma symptoms kept coming back on my long-term control medicine. i talked to my doctor and found a missing piece in my asthma treatment with breo. once-daily breo prevents asthma symptoms. breo is for adults with asthma not well controlled on a long-term asthma control medicine, like an inhaled corticosteroid. breo won't replace a rescue inhaler for sudden breathing problems. breo opens up airways to help imove breathing for a full 24 hours.