Can I still eat Dendrobium (Iron皮 Stone斛) that has been stored for 9 years?

Generally speaking, Dendrobium officinale (Tiepi Shihu) is a traditional Chinese herb that functions to benefit the stomach, promote salivation, nourish yin, and clear heat. Whether Dendrobium officinale stored for 9 years remains edible depends specifically on its storage condition. If it has been well preserved without deterioration, it is generally safe for consumption; however, if mold growth or spoilage is present, it should not be consumed. Detailed explanations are as follows:

If Dendrobium officinale has been stored in a dry, well-ventilated, and light-protected environment, and remains unaffected by moisture, mold, or insect damage, with no significant changes in appearance or odor, it may theoretically retain its medicinal value.

Conversely, if signs of spoilage such as mold growth, unusual odor, color change, or softening due to moisture appear during storage, harmful substances such as mold toxins and other hazardous compounds might be present, which could pose health risks if consumed.

To ensure safety and efficacy, it is recommended to check the production date, shelf life, and storage conditions when purchasing and consuming Dendrobium officinale, and to consume it within the indicated shelf life.