This is a multicenter, randomized, double-blind, double-dummy, active-controlled, dose-finding study to compare the efficacy, safety and tolerability of oral SCY-078 versus oral fluconazole in adult female subjects 18 years and older with moderate to severe Acute Vulvovaginal Candidiasis (AVVC). Approximately 180 eligible subjects (30 subjects per treatment group) will be enrolled and randomized into the study.

This is a Phase 2, multicenter, randomized, double-blind, double-dummy, active-controlled, dose-ranging study of female subjects with moderate to severe Acute Vulvovaginal Candidiasis. Subjects will be randomized to either the investigational arm (SCY-078) with 5 different dose regiments ranging from 1 to 3 days of treatment or to the active-control arm (fluconazole) for 1 day of treatment. After randomization subjects may be seen on study Day 3 (on site visit for PK subjects) , Day 10 (±2,) and Day 25 (+4).

Key Inclusion Criteria:

1. Subject is a female of at least 18 years of age
2. Subject has a diagnosis of symptomatic AVVC at baseline including a positive microscopic examination with 10% KOH in a vaginal sample revealing yeast forms (hyphae/pseudohyphae) or budding yeasts, and vaginal pH (≤4.5)

Key Exclusion Criteria:

1. Subject has any vaginal condition other than AVVC that may interfere with the diagnosis or evaluation of response to therapy, such as suspected or confirmed concurrent causes of vulvovaginitis and/or cervicitis (mixed infection)
2. Need for systemic and/or topical (vaginal) antifungal treatment, including prescription or over-the-counter products during the study and treatment for VVC 28 days prior to randomization
3. Subject is actively menstruating at the time of the Baseline visit.
4. Subject has uncontrolled diabetes mellitus.
5. Subject has a vaginal sample with pH >4.5.
6. Subject has a history of or an active cervical/vaginal cancer.