Can the leaves of Ophiopogon japonicus (L.f.) Ker Gawl. be boiled in water for consumption?

Generally speaking, Ophiopogon japonicus (MJ) leaves can be used to make tea, but their consumption should be determined according to individual needs and physical condition. Detailed explanation is as follows:

MJ leaves are slightly cold in nature and possess certain effects of clearing heat and relieving dryness. They are suitable for symptoms such as sore throat or dry mouth caused by internal heat and dryness. Compared with the tuberous roots of MJ, the effects of the leaves are weaker, but they can still be used as a daily health beverage. During the recovery phase of heat-related illness or when mild yin nourishment is needed, drinking MJ leaf tea in appropriate amounts may serve as an auxiliary measure to help alleviate mild discomfort.

If the body constitution is biased towards cold or there is spleen and stomach deficiency, drinking MJ leaf tea is not recommended. The cold nature of the leaves may exacerbate internal coldness, leading to problems such as abdominal distension, diarrhea, or indigestion. Moreover, the content of effective components in MJ leaves is relatively low, so they cannot replace medical treatment. Excessive consumption may impose a burden on the body.

Although drinking MJ leaf tea has certain medicinal value, it is not suitable for everyone and should be consumed strictly under the guidance of a physician in appropriate amounts, as excessive intake may cause diarrhea and other problems.