Addyi, known as the "female Viagra", is a prescription medication used to enhance sexual desire and decrease emotional distress in premenopausal women with hypoactive sexual desire disorder (HSDD). HSDD is the most commonly reported sexual dysfunction in women. Although Addyi has been called "Female Viagra", the way in which it works is distinctly different from Viagra. Viagra works by increasing blood flow to the genitals, whereas Addyi may work more like an antidepressant by correcting an imbalance of neurotransmitters in the brain to help restore sexual desire. It has effects on dopamine, norepinephrine, and serotonin levels in the brain.