The World Health Organization estimates at least 120 million people suffer from depression, a common disorder that can be treated in most cases with medication.  But medication often produces side effects such as headache, nausea, difficulty sleeping and a reduced sex drive.  Now a study shows that a drug called sildenafil - normally prescribed for men - can also help women.  VOA's Melinda Smith has more on the medication better known as Viagra. 

 

Some video courtesy of Journal of the American Medical Association