Berberis aquifolium Mother Tincture is Prescription Homeopathic Medicine obtained from Mahonia aquifolium. It is used externally for its anti-psoriatic effects, and as an anti-fungal, anti-inflammatory, and antioxidant natural medicinal agent. Several experimental studies indicate components of Berberis (Mahonia) aquifolium have anti-inflammatory, anti-proliferative and other actions of relevance to psoriasis.