The little blue pill may do more than get the blood pumping. Sildenafil — the generic name for Viagra — also increases release of a reproductive hormone in rats, according to a new study. Researchers at the University of Wisconsin-Madison report this month that sildenafil increases the amount of oxytocin released by stimulation of the posterior pituitary gland, a small structure directly underneath the brain that regulates hormone levels in response to neural signals.
