* The erectile dysfunction drug tadalafil (Cialis) has now been approved to treat the signs and symptoms of benign prostatic hyperplasia, whether it occurs by itself or along with erectile dysfunction.
* Drug interactions can occur with concurrent use of nitrates or α blockers, producing hypotension. Coadministration should be avoided.
Diane S. Aschenbrenner is the course coordinator for undergraduate pharmacology at Johns Hopkins University School of Nursing in Baltimore, MD. She also coordinates Drug Watch: email@example.com.