Senna leaf is a small leaf of Leguminosae.

Senna leaves, also known as senna leaves, Chenna leaves and soaked bamboo leaves, are the leaflets of bean plants with pointed leaves or narrow leaves. Sweet, bitter and cold, it is a kind of stimulating catharsis, which belongs to strong medicine. It acts on the colon and usually takes effect within a few hours. Main ingredients: sennoside, aloe-emodin, berberine, glucoside, polyphenol oxidase.

identification points

(1) Senna angustifolia leaves are oblong or ovate-lanceolate, with acute tips, slightly asymmetrical base and entire margin.

(2) The upper surface is yellow-green, the lower surface is light yellow-green, and the veins are slightly raised and leathery.

(3) Qi is weak and specific, slightly bitter in taste and slightly sticky.

according to traditional experience, the leaves are intact, dry, green, with few stalks and no yellow leaves, broken leaves and impurities.

refer to Baidu encyclopedia-senna leaf for the above contents.