Medications used to treat male baldness or an enlarged prostate that contain the active ingredient finasteride have been linked to sexual dysfunction and infertility, according to a notice about changes to the drugs' labels from the US Food and Drug Administration (FDA).
The changes to the labels of the male hair loss drug Propecia and the prostate drug Proscar were announced in April (http://tinyurl.com/6qp8nnb). In 2011, the drug labels had been updated to note the possibility that users may experience erectile dysfunction even after they stop taking these drugs. However, the new labeling indicates that a number of other sexual adverse events may also be associated with use of these medications.
Kuehn BM. Prostate, Baldness Drugs Linked to Sexual Dysfunction. JAMA. 2012;307(18):1903. doi:10.1001/jama.2012.4488