none. it is not recommended that you give any cough expectorant or suppressant to a child under age one. coughing helps clear their airway of mucous. while this may be annoying to both of you coughing is beneficial to prevent pneumonia. i cannot diagnose your child blindly over the internet but if the cough persists you will need to have him/her examined. you can do "mucous management" however --- saline nasal sprays nasal aspiration and using a cool mist humidifier in the child's room.
what type of cough medicine do you give a child less than one year old and also has sneezing and a slight fever