My mother has asthama problem since quute some years she is 84 recently she has difficulty breathing specially walking short distances. Now she is uneasy lying on back wants to be seated in 5 min interval. She has not been on any drug or steriods. Just started her on asthalin using nebuliser. Also she keeps clearing throat if lying on back. What shouldd I give her so she get easy and can comfortably breathe lying on back. Does not need to clear throat.