A topical preparation containing Indigo naturalis powder has been shown in a University trial to be effective in treating plaque-type psoriasis. After 12 weeks of treatment, the plaques treated with indigo naturalis ointment showed significant improvement in scaling, redness and hardness when compared with the plaques treated with non-medicated ointment. The color and smell of indigo naturalis may affect compliance.
Indigo naturalis ointment treatment had known adverse effects. While indigo naturalis ointment can be an alternative or complementary therapy for psoriasis the long term safety of this product has not been tested.

Psoriasis on elbow








