Aczone 5% Gel as Maintenance Treatment of Acne Vulgaris Following Completion of Oral Doxycycline and Aczone 5% Gel

Inclusion Criteria: * Outpatient, male or female subjects of any race, age 12 or older. Female subjects of childbearing potential must have a negative urine pregnancy test result at Baseline and practice a reliable method of contraception throughout the study; * Facial acne vulgaris characterized by the following: IGA Score \>3 10-50 facial inflammatory lesions (papules,pustules) 10-100 facial non-inflammatory lesions (open/closed comedones) * Able to understand and comply with the requirements of the study and sign Informed Consent/HIPAA Authorization forms Exclusion Criteria: * Female subjects who are pregnant (positive urine pregnancy test), breast feeding, or who are of childbearing potential and not practicing a reliable method of birth control. * Allergy/sensitivity to any component of the test treatment (Section 5.2), lincomycin, tetracyclines, or sulfites. * Subjects who have not complied with the proper wash-out periods for prohibited medications/procedures (Supplement 1)\> * History of clinically significant anemia or hemolysis. * History of enteritis (regional enteritis, ulcerative colitis, pseudomembranous colitis, or antibiotic-associated colitis). * Skin disease/disorder that might interfere with the diagnosis or evaluation of acne vulgaris * Evidence of recent alcohol or drug abuse * Medical condition that, in the opinion of the Investigator, contraindicates the subject's participation in the clinical study * History of poor cooperation, non-compliance with medical treatment or unreliability * Participation in an investigational drug study within 30 days of the baseline visit.