- Wearing one of these devices may temporarily enlarge your penis. But wearing it for more than 30 minutes can cut off blood flow and cause damage to your penile tissues. More research is needed to learn how safe and effective penile extenders are. Too much stretching may also cause bruising, nerve damage, or blood clots to form in the veins of your penis. There aren’t enough medical studies to suggest that jelqing can actually increase your penis size.
WEDNESDAY, Jan. 13, There's no proof that over-the-counter sexual enhancement supplements for men work, and some are potentially dangerous, a new study reports. Thousands of years before Viagra, men were consuming everything from horny goat weed to powdered rhino horn in hopes of boosting sexual performance. The remedies persist for men who can't get their hands on prescription drugs like Viagra or who prefer "natural" cures.