The efficacy of ginger, pepper and Chenpi in water is to relieve cough and resolve phlegm, warm and stop vomiting (to warm the spleen and stomach to treat vomiting caused by stomach cold) and so on.
The efficacy of ginger is to stop cough, dissolve phlegm, stop vomiting, warm the middle, relieve surface, disperse cold, and detoxify fish and crab. It can be used for coughing cold phlegm, vomiting stomach cold, wind-cold cold. It is not to be taken by those who are hot and have internal heat in yin deficiency.
Pepper is effective in killing insects, relieving itching, relieving pain and warming the middle. It can be used for eczema and abdominal pain, vomiting and diarrhea. It is not recommended to be taken by those with yin deficiency and fire.
The effects of Chen Pi are resolving phlegm, drying dampness, strengthening the spleen and regulating Qi. It can be used for vomiting and diarrhea with little food, cold-dampness obstruction, distention and fullness of the epigastric region (abdomen), eructation (hiccups) and vomiting, chest paralysis (stuffy pain in the chest), phlegm and coughing, etc. It can also be used for treating diarrhea, dampness and cold-dampness. Caution should be exercised in cases of qi deficiency, yin deficiency and dry cough, vomiting of blood, and red tongue with little fluid and solid heat inside.
The three together, has a cough, phlegm, warm stop vomiting and other effects. The efficacy of Chinese medicine in water is limited, and it can not replace the prescription to play a therapeutic effect, and the effect also varies from person to person. It is recommended to use it under the guidance of a physician.