Pilot Study of Pregnenolone Augmentation Targeting Cognitive Symptoms in Persistently Symptomatic Patients With Schizophrenia

Pregnenolone 50 mg twice a day (BID) x 2 weeks, Pregnenolone 150 mg BID x 2 weeks, Pregnenolone 250 mg BID x 4 weeks

Placebo (similar to active comparator) 50 mg BID x 2 weeks, Placebo (similar to active comparator) 150 mg BID x 2 weeks, Placebo (similar to active comparator) 250 mg BID x 4 weeks