Psoralea corylifolia (Fabaceae)[edit]

<a href=""><img src="" alt="Psoralea corylifolia" width="350" height="350" align="right" title="Bakuci is one of the best herbs, used in the treatment of various skin disorders.">

Psoralea corylifolia


Sanskrit Names: Bakuchi English Name: Purple fleabane, Psoralea seed Hindu Name: Bavachi Chinese medine: Psoralea Seed, Malay Tea, Cot Chu, Ku Tzu Malaysia, Scurf-pea, Malaysian Scurfpea, P'o Ku Chih, Pha Cot Chi Botanical Name: Psoralea corylifolia Linn. Synonyms: Avalguja, Kusthaghni, krsnaphala, Putipahali, Somaraji Family: Fabaceae


Bakuci grows throughout India, especially in the plains of Central and Eastern India, in abundance. An herbaceous annual grows upto one metre in height. The leaves, arranged in racemes, are simple and broadly elliptic. Five main nerves spring from the base of the leaf. On both the surfaces, the leaves are clothed with white hairs. The flowers are blue in colour, axillary in 10-30 flowered racemes. The fruits-pods are flat closely pitted and black. The seeds are dark brown and elongated. The glabrous closely pitted seeds are compressed, nonendospermic, smooth, oily and free of starch. The plant flowers from August to December. 1

Erect annual herb of 30 to 180cm in height, stems and branches are grooved, studded with conspicuous glands and with appressed and spread white hairs. Leaves are simple, elliptic, rounded at apex, sparingly clothed with white hairs on both surfaces. Flowers are close and dense axillary, solitary, hairy pedicels are very short. Pods are 5mm long oblong, black, glabrous one seed adhering to pericarp. Seeds: a small ovoid oblong or kidney shaped somewhat compressed one seeded legume ovate colous with aromatic and bitter taste, Fruits are black, rounded oblong closely pitted, rough, dark brown and have aromatic odour and taste bitter.

== Principle Constituents == 
<a href=""><img src="" alt="Psoralea corylifolia seeds" width="300" height="250" align="right" title="Bakuci seeds.">

Psoralea corylifolia seeds


Classical Categories (Gana)[edit]

This herb belongs to the following classical groups:

Caraka Ganas: none
Susruta Ganas: none


Rasa (taste): Katu (pungent), Tikta (bitter)
Guna (quality): Laghu (light), Ruksha (dry)
Virya (energy): Ushna (heating)
Vipaka (post digestive effect): Katu (pungent)
Prabhava (Special quality): none
Dosha Effect: KV- P+
Dhatus:Rakta, Meda
Srotas (channels): Annavaha, Raktavaha

Chemical Constituents[edit]

Furanocoumarins Psoralen Flavanoids Bavachin, bakuchiol, diadzin Essential oil Limonene, terpineol 2

Ayurveda Actions[edit]

Anulomana - Laxative effect. Moved downwards
Deepana - kindles digestion
Jvaraghna - anti fever
Keshya - hair tonic
Krumighna - anti microbial
Kusthaghna - for skin conditions
Hridya - heart tonic
Pachana - digests toxins
Pramehaghna - anti diabetic
Shothaghna - anti-inflammatory
Swedajanana - induces sweat
Tvachya - skin disorders
Vajikara - aphrodisiac
Varnya - complexion
Vranaropana - wound healing

Important Actions[edit]

One of the best medicine for leucoderma. Has an action on rouget's cell and the melanoblastic cells of the skin. The oil Bavachi changes white skin, grey hair, rough, scaly, discoloured skin, nails, hairs etc. to normal within 3 months.


Kustha (Skin conditions, pigmentor), sotha (inflammation), Krmi (parasite), Pandu (anemia)

External use[edit]

Used in skin diseases for wound healing and improves hair growth, Powdered bakuchi or oil prepared from it is used locally in leucoderma, dermatoses, wounds and alopecia. A mixture of bakuchi, karanj and lime juice is used in eczema. Oil of bakuchi and karanj and vaseline is used in chronic skin diseases. White spits of leucoderma turn red in colour after prolonged application of bakuchi.

Internal use[edit]

Circulatory system: As it stimulates the heart and circulatory system, it is used in cardiac failure and oedema produced by it. Digestive system: Useful in indigestion, aa and constipation. It is useful in all types of worms, expecially round worms. As a liver stimulant it is useful for piles. Nervous system: As a nerve tonic useful for vata disorders. Respiratory system: Used in coughs and asthma since it reduces kapha by its katu rasa and ushna virya. Reproductive system: A stimulant and aphrodisiac, it is used in impotency and premature ejaculation. Urinary system: Useful in diabetes. Skin: Its oil has a specific irritant action on the skin and mucous membrane. On applying the oil on leucoderma, the skin becomes reddish and occassionally blisters may occur. But it does not create any alterations in the normal colour of the skin. The oil acts in leucoderma by activating the melanoblastic cells of the skin. It is useful in all skin diseases. In leucoderma the oil must be so applied that it only produces a change in colour and not blisters. Temperature: Febrifug. used in chronic fever.


Excessive UV therapy, high pitta. Use with caution in pregnancy.


There are no drug herb interactions known but use caution when applying externally.

Parts Used[edit]

Parts used: Seeds, leaves and roots Dosage: Powder 1-3 gms; for worms 4-6 gms

Important Combinations[edit]

Preparations: Bakuchi taila, somaraji taila, vidangadi lepa