How long does Zhang Zhiyuan think medicinal materials should be preserved?

Zhang Zhiyuan believes that the storage period of medicinal materials should be three years. Because Zhang Zhiyuan thinks that the shelf life of herbs should not exceed 3 years, and the storage of volatile components such as mint and agastache for too long will affect the quality and reduce the efficacy. Zhang Zhiyuan (1920-2065438+200710.7), male, Han nationality, 1920, born in July, Dezhou, Shandong Province, has no party affiliation. Since June 1944, he has been engaged in traditional Chinese medicine. Shandong famous old Chinese medicine doctor, professor of Shandong University of Traditional Chinese Medicine.

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