Is sugar-free green tea with half-sugar black tea actually a good remedy for cough? Traditional Chinese medicine reveals that one ingredient may lead to excessive phlegm and coughing.
- byVic

讀後心得
Recently, there has been a trending "cough remedy" online, which involves mixing sugar-free green tea and half-sugar black tea, claiming that it can relieve coughing within three days. Traditional Chinese Medicine doctor Liu Zongsheng stated that while this combination might be beneficial for certain types of coughs, it is not an ideal treatment option because the flavors conflict and it lacks specificity. Additionally, the sugar content may lead to phlegm and dampness, potentially worsening the cough. Therefore, if experiencing a cough, it is recommended to seek professional medical advice.
Recently, a "cough remedy" of sugar-free green tea mixed with half-sweet black tea has been circulating online. It is said that this beverage combination can be a savior for coughs, leading many beverage shops to launch related products.
However, experts point out that while this combination may have potential effects, its effectiveness in treating coughs is limited. Traditional Chinese medicine practitioners emphasize that this way of drinking lacks specificity, and the presence of sugar may increase phlegm and dampness, exacerbating coughs, while the conflicting properties of cold and hot may also reduce efficacy.
It is claimed that if one continues to drink sugar-free green tea mixed with half-sweet black tea for three days, cough relief can be achieved. However, traditional Chinese medicine practitioners note that the conflicting properties of this combination make it difficult to target specific types of coughs. Traditional Chinese medicine recognizes various types of coughs, such as wind-cold cough and wind-heat cough, and treatment must be adjusted based on the patient’s environment, constitution, and symptoms.
Green tea has the effects of clearing lung heat and resolving phlegm, while black tea has properties that warm the spleen and stomach and assist in qi transformation. Such combinations are suitable for cough situations with mixed cold and heat. However, the effectiveness and specificity of the treatment both have limitations, and if there are cough issues, it is recommended to consult a professional medical institution.
From the perspective of traditional Chinese medicine, tea refers to unfermented green tea, which is considered cold in nature and bitter in taste, helping to clear heat and eliminate fire. Black tea, due to fermentation, becomes warm in nature. Although there are no direct records in ancient texts, it can be inferred from its processing and traditional Chinese medicine theory regarding its specific effects.
In summary, the combination of sugar-free green tea and half-sweet black tea may not necessarily be the best choice for treating coughs and needs to be adjusted based on individual circumstances.