While these side effects mainly create discomfort, some individuals are at risk for more serious, even life-threatening reactions to these drugs. Some men have reported fainting after taking impotence medications, and priapism (a painful condition involving an erection that does not subside after more than four hours) has also occurred as an effect of impotence drugs. This condition can lead to permanent nerve damage; injectable drugs may also cause irreversible damage to the penis if used incorrectly.
The oyster has always had an aphrodisiac reputation. One reason may be that oysters have high levels of the mineral zinc, which plays an important role in the production of the male hormone testosterone, and low levels of testosterone could be one reason for erectile dysfunction. Research presented at an American Chemical Society meeting may offer another connection: Raw shellfish contain compounds that stimulate the release of sexual hormones in both men and women.
Researchers discovered men who regularly consumed flavanoid-rich foods—especially those with anthocyanins, flavones, and flavanones—experienced a significantly reduced risk of the disorder than those who did not. Good news since the foods are already popular in American diets. Lead researcher Aedin Cassidy says, “…the top sources of anthocyanins, flavones and flavanones consumed in the U.S. are strawberries, blueberries, red wine, apples, pears and citrus products.”