How many days of taking fluticasone/salmeterol 250x2/day till symptoms go? 4 days on broncospasms milder but coughs/airways/phlegm haven't normalized.

Improvement varies: Depending upon the acute precipitator of this asthma flair, viral infection, allergen, etc. Improvement can take hours to days. Another determinant is the use of a chronic anti-inflammatory. Generally therapeutic response is quicker if the asthmatic is taking daily inhaled corticosteroid (ics), rather than periodic medication. Except in intermitttent asthma ICS therapy should be daily, not prn.