Men in the US and Canada concerned about persistent sexual side effects "coined the phrase 'post finasteride syndrome', which they say is characterized by sexual, neurological, hormonal and psychological side effects that can persist in men who have taken finasteride for hair loss or an enlarged prostate".   In 2012, a health advocacy group called the Post-Finasteride Syndrome Foundation was formed with the primary goal of finding a cure for the reported syndrome and a secondary goal of raising awareness.  According to the company's 1Q2016 financial filing, Merck is a defendant in 1,385 product liability lawsuits which have been filed by customers alleging they have experienced persistent sexual side effects following cessation of treatment with finasteride. 
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