Shoujian is the root of Sichuan shoujian or shoujian, a plant in the family of Sichuan shoujian. It contains alkaloids and volatile oils, and it also contains vitamins.

Sequestrum is bitter, pungent and slightly warm in nature, with the functions of tonifying the liver and kidney, renewing the tendons and bones, regulating the blood, facilitating the joints, stabilizing the fetus and stopping the leakage of blood, etc. It is suitable for the treatment of renal deficiency due to insufficiency of the liver and kidney, lumbar and knee soreness, spermatorrhea, weakness of the limbs, injuries to the tendons and bones, rheumatism, joint pain, bleeding in pregnancy, restlessness of the fetus, leakage of blood and leaking of the belt, hemorrhoidal fistulae, carbuncle and soreness, and so on.

Modern medical research has confirmed that Sequence has the effect of draining pus, stopping bleeding, analgesic, and promoting tissue regeneration on painful ulcers.