In general, it is not recommended for anyone to intake any nourishing herbs when suffering from an acute flu, fever or cough, as the body is not in the optimal state for processing and absorbing these nutrients and may instead become overloaded from the excessively rich nutrients, hampering a quick recovery from these acute, short duration illnesses. Hence it is important to first clear the phelgm that could be causing the persistent cough at night before consuming Winsconsin American Ginseng Tea. Depending on the type of cough (hot/cold) ,texture and colour of phelgm (sticky;yellow - hot/ loose;white- cold), Eu Yan Sang carries a series of cough powders that can help clear phelgm and reduce coughing. We recommend the following products to help strengthen the respiratory system - Bird's Nest, Cordyceps and Cough Relief Soups. For a confirmed diagnosis of asthma/cough triggered by asthma, our TCM physicians at our islandwide Eu Yan Sang Clinics would be able to better assist