Garlic water does not cure coughs, but may aggravate them due to its irritating properties. If your cough worsens at night after drinking garlic water, you need to stop drinking garlic water, identify the cause of the cough, and treat the cause. 1. Allergic cough: usually in contact with allergens, cold stimulation, odor stimulation, etc. cough, can also be manifested in the night and early morning cough, usually dry cough. Drinking garlic water to stimulate the airway can lead to aggravation of the cough, the treatment can use loratadine, cetirizine and other anti-allergy treatment. 2. Bronchopneumonia: usually manifested as a violent cough, coughing up sputum, some patients are more obvious at night, some also accompanied by wheezing, fever, etc., can be manifested as drinking garlic water at night cough aggravation. If there is a basis for bacterial infection, you can use cefixime and other anti-infective. At the same time, aminobromine, bromhexine and other phlegm to stop coughing, with wheezing can use aminophylline. 3. Gastroesophageal Reflux Disease (GERD): This disease is caused by the reflux of gastric contents into the esophagus, airway, and pharynx, thus causing coughing symptoms. As the reflux is aggravated at night when lying down, it can be manifested as nighttime aggravation. Drinking garlic water can irritate the stomach, causing gastric discomfort, aggravating reflux and leading to worsening cough. Treatment can be with drugs such as omeprazole and mosapride. Drinking garlic water at night cough aggravation, there are other reasons, such as bronchial asthma, sinusitis, etc., it is recommended to consult a doctor in a timely manner, improve the examination, a clear diagnosis, the cause of the treatment. The above medication need to follow the doctor’s instructions, do not self-medication.