Quoted from http://articles.courant.com/2011-03-03/health/hc-buck-propecia-lawsuit-0304-20110303_1_side-effects-propecia-hair-loss
Lawsuit Blames Hair Loss Drug For Sexual Dysfunction And Mental Problems
March 03, 2011|By RINKER BUCK, The Hartford Courant
A Connecticut law firm has filed a lawsuit against pharmaceutical manufacturer Merck & Co. on behalf of men who have taken Propecia, a prescription drug that combats hair loss but, its critics say, can also cause severe side effects such as sexual dysfunction and mental impairment.
Attorney Edward Jazlowiecki of Bristol has joined two other firms, in New Jersey and New York, in filing the suit, which alleges that Merck has failed to fully disclose the serious side effects of Propecia and failed to adjust its warnings in the American market even after European regulators forced the company to carry a stronger warning label.
Propecia, which is also marketed under the brand name Proscar, was originally introduced to treat men with enlarged prostates, but it won FDA approval in 1997 for the treatment of male pattern hair loss after patients noticed its restorative powers with hair. The drug's active ingredient is finasteride, which can help reduce the levels of the substance on the scalp that leads to hair loss.