Hi Sir My Daughter Is 2 Yrs N 8 Mnths

Hi sir my daughter is 2 yrs n 8 mnths old and she z having frequent cold n cough since last two mnths . We hav given her flu vaccination also but again she z catching it fast, i had given her a combination of tyxilix n flucold both 2.5 ml bt nw d sneezing n cough has gone bt nose running hasnt stopped that too very sticky cos of which she z unsble to sleep n for dat m givng ambrodol s, for hw mny days i shld giv it n hw much n pls tell me if it z safe