VERNON HILLS, Ill.--(BUSINESS WIRE)--Now patients with mild to moderate plaque psoriasis have a new topical treatment option available by prescription. Zithranol™-RR (anthralin rapid release microcrystalline encapsulated cream, 1.2%), is an innovative topical therapy for plaque psoriasis according to Elorac, Inc., a privately held emerging dermatology company. Zithranol™-RR provides an advanced delivery system for anthralin achieving long remission times with no long-term side effects in a steroid-free, silky cream.