Dear all daddy/mummy, I need advise if anyone tried the Eu Yan Sang’s Kitz Cough Powder? My 21 months toddler have been coughing for nearly 3 months, seek specialist twice but no improvement. I come across this Eu Yan Sang’s cough powder for children and heard the effectiveness of it and bought 3 bottle as advised. After my son consume the 1st bottle, next morning rash appeared on my son body. Is this normal or should I stop the medicine?