My Daughter Was Put On A Bata Blocker And Now

my daughter was put on a Bata blocker and now has a sinus infection. my question is, she is now coughing until she vomits could this be from the Bata blocker? she has had many sinus infections through out her life, she has a low IGA, but she hasn't had this problem before. the coughing started just before she went on the Bata blocker, but seems worse now.