Allopregnanolone and Dynamic GABA-A Receptor Plasticity in Selective Serotonin Reuptake Inhibitor Responsive Premenstrual Dysphoric Disorder

The intervention will be in the form of an oral pill, taken daily, from the day of positive urine ovulation test result until the day of menses onset.

The placebo oral tablet will be of the same shape, color, and manufacturer as the sertraline 50 mg oral tablets. Tablet will be taken daily, from the day of positive urine ovulation test result until the day of menses onset.