Overview An Extension Study to Assess the Safety, Tolerability, Efficacy, and Treatment Adherence of Dapsone in Acne Vulgaris Status: Withdrawn Trial end date: 2013-10-01 Target enrollment: Participant gender: Summary This study will assess the safety, tolerability, and efficacy of dapsone in subjects with acne vulgaris following 12 weeks of treatment. Phase: Phase 1 Details Lead Sponsor: AllerganTreatments: Dapsone