Suggest Treatment For Cold, Ear Inflammation And Cough

Hello , My daughter has cold , and ear inflammation and tonight she has been coughing nonstop. She s on antibiotic right now . Her doctor didn t prescribe any cough medicine since the coughing symptom wasn t there back at the time we visited. I searched for cough medicines at home but I m really not sure what to give her. I found fenistil drops... Does it help relief the cough a bit ?