Is Houttuynia cordata a food that may cause allergic reactions or exacerbate existing conditions?
Jun 25, 2025
Source: Cainiu Health
Dr. Sun Lianqing
Introduction
"Fash" generally refers to foods that may trigger or exacerbate certain diseases. Houttuynia cordata (fish腥grass) is cool in nature and possesses functions such as clearing away heat, detoxifying, and antibacterial and anti-inflammatory effects. It generally does not provoke recurrence or worsen existing conditions. Clinically, Houttuynia cordata is commonly used as an adjunct in treating inflammatory diseases, such as respiratory tract infections and urinary system infections, and there is no clear evidence indicating it acts as a "fash" to aggravate the病情 (condition).
Generally speaking, Houttuynia cordata is not considered a "trigger food" (a type of food believed to induce or aggravate certain diseases).
"Trigger foods" typically refer to those that may induce or worsen certain illnesses. Houttuynia cordata is cold in nature and possesses effects of clearing heat, detoxifying, and anti-inflammatory actions. It generally does not provoke recurrence or exacerbation of existing conditions. Clinically, Houttuynia cordata is commonly used as an adjuvant treatment for inflammatory diseases such as respiratory tract infections and urinary system infections. There is no clear evidence indicating that Houttuynia cordata acts as a trigger food that worsens medical conditions. In most cases, consuming Houttuynia cordata is safe for healthy individuals and some patients.
However, a small number of individuals with special body constitutions may experience allergic reactions to Houttuynia cordata, such as rashes and itching after consumption. These reactions are manifestations of individual allergies rather than the traditional concept of "trigger food" properties. Additionally, the cold nature of Houttuynia cordata may irritate individuals with cold deficiency of the spleen and stomach, causing symptoms like abdominal pain and diarrhea. However, these discomforts arise from constitutional differences rather than disease recurrence caused by trigger foods, and should be differentiated from the concept of "trigger food."
When consuming Houttuynia cordata, individuals should assess based on their own body constitution. Those with cold deficiency of the spleen and stomach should moderate their intake, while individuals with allergic constitutions should consume it cautiously. If abnormal reactions occur after consumption, usage should be stopped immediately and professional advice should be sought.
