welcome to HCM!
Losartan is an angiotensin
II antagonist drug used mainly to treat high blood pressure
alone or in combination with other medications . Losartan was the first angiotensin II antagonist to be marketed.Angiotensin II receptor antagonist such as losartan is recommended as first-line treatment in patients under the age of 55 who cannot tolerate an ACE inhibitor
is an antibiotic that fights bacteria.Azithromycin is used to treat many different types of infections caused by bacteria, such as respiratory infections, skin infections, ear infections.Your friend seems to be having infective cough that responds to azithromycin and then comes up again.sputum culture
and senstivity can be done to check the organism and appropriate antibiotic.
I hope this will help.Take care!