Can Houttuynia cordata and fish mint be used interchangeably?
Aug 05, 2025
Source: Cainiu Health
Dr. Sun Lianqing
Introduction
If used for home cooking, such as in cold dishes or soups, or for basic medicinal purposes like relieving mild coughs, both are from the same plant and have identical components and effects. In such cases, they can be used interchangeably without affecting the outcome. However, in professional pharmaceutical processes, if the formulation specifies the purity level or plant part of Houttuynia cordata required, then substitution may not be appropriate.
In general, Zhe'ergen and Houttuynia cordata are the same plant and can be used interchangeably in daily cooking or simple medicinal applications. However, they cannot be substituted for each other in professional pharmaceutical production or precise research scenarios. Detailed explanations are as follows:
If used in home cooking, such as in cold dishes or soups, or for basic medicinal purposes like relieving mild coughs, the two are the same plant with identical components and effects. In such cases, substitution poses no problem and will not affect the outcome.
However, in professional pharmaceutical processes where the purity and specific parts of Houttuynia cordata required in the formulation are strictly defined, the condition of Zhe'ergen may not meet these specifications. Similarly, in scientific research or other scenarios with stringent material requirements, substitution should not be done arbitrarily to avoid affecting the final results.
Ensure both materials are fresh and unspoiled when using them. If there is any uncertainty regarding substitution in medicinal applications, it is advisable to consult a professional to avoid adverse consequences due to improper substitution.
