i dont want to give

So i went to this private clinic in kuching and they gave me these meds.first they gave antibiotic,cough syrup and panadol for kids.i only gave my 4months old son cough syrup and panadol and went for neb.today i went for his 2nd neb in the morning and 3rd neb at night and the night dr gave me another coughing syrup which is the vitaivy. The staff gave together with the box and i happend to read it. I saw the min age was 2years old and now my instinct tells me not to give him. My son is having cough and mucus and sometimes he tearing even when in aircond room. He sick because of the bad haze in kuching.. should i give him the vitaivy cough syrup?he is only 4months old