This product is the mature fruit of the annual herbaceous plant Psoralea (Psoralea corylifolia L.) from the legume family. It is mainly produced in Henan, Sichuan, Shaanxi, and other regions. The fruit is harvested when it matures in autumn. It can be used raw or processed with saltwater.

bubble_chart Properties and Meridians

Acrid and bitter, warm. Act on kidney and spleen meridians.

bubble_chart Efficacy

Tonifying the kidney and assisting yang, securing essence and reducing urination, warming the spleen and stopping diarrhea, improving qi reception and relieving dyspnea.

bubble_chart Indications

1. Used for kidney yang deficiency, life gate fire decline, cold pain in the waist and knees, impotence, seminal emission, frequent urination, etc. It has the effects of warming and tonifying the life gate, strengthening the kidneys and waist, tonifying yang, consolidating essence, and reducing urination. For treating cold pain in the waist and knees, it is often combined with Eucommia Bark, walnut kernel meat, namely Young Maid Pill; for treating impotence due to lower yuan deficiency, it is often combined with Dodder Seed, Aquilaria, walnut kernel meat, such as Psoralea Pill (cited from Bencao Gangmu); for treating seminal emission, it can be stir-fried with qingyan (green salt) in equal parts and taken as powder (Sanyin Fang); for treating kidney qi deficiency cold and excessive urination, "Wei's Family Hidden Prescriptions" uses it with fennel fruit in equal parts to make pills.
2. Used for spleen-kidney yang deficiency diarrhea. It can tonify kidney yang to warm the spleen and stop diarrhea. It is often combined with Schisandra Fruit, Nutmeg, Evodia Fruit, such as Four Miracle Pill from "Internal Medicine Summary".
3. Used for deficiency-type dyspnea due to failure of the kidney to receive qi. It can tonify kidney yang and improve qi reception and relieve dyspnea. It is often combined with Ginseng, Cassia Bark, Aquilaria, etc.
4. In addition, it can also treat vitiligo. It can be ground into powder and made into a 20%～30% tincture with alcohol for external application.

bubble_chart Documentation

1. Yaoxing Lun: "It is primarily used for treating men with lower back pain, cold knees, damp scrotum, expelling various cold obstinate impediments, stopping excessive urination, and cold in the abdomen."
2. Kaibao Bencao: "It treats five strains and seven injuries, wind deficiency and cold, damage to the bone marrow, cold kidneys and seminal leakage, as well as women's blood qi early abortion."

bubble_chart Usage and Dosage

Decoct and take 6-15g. Apply externally as needed.

bubble_chart Modern Pharmacology

This product contains fatty oils, volatile oils, resins, and compounds such as Psoralea, iso-Psoralea, Psoralea A, and Psoralea B.

1. Psoralea can dilate the coronary artery, stimulate the heart, and enhance cardiac performance;
2. it can contract the uterus and shorten bleeding time, reducing the amount of bleeding.
3. It has photosensitizing effects, and when taken orally or applied to the skin, exposure to sunlight or ultraviolet light can cause localized skin pigmentation.
4. It also has anti-liver tumor, anti-aging, antibacterial, anthelmintic, and estrogen-like effects.