It is obtained from several plants, mainly " Psoralea corylifolia ".
2.
Very high concentrations genistein have been found in the leaves of " Psoralea corylifolia ".
3.
Psoralen occurs naturally in the seeds of " Psoralea corylifolia ", as well as in the common fig, celery, parsley, UVA ) treatment for psoriasis, eczema, vitiligo, and cutaneous T-cell lymphoma.