Ever hear of the term whisky dick? Well I've heard about a little cure for it. Now I'm not a Dr. so check this out before you do it but apparently you can take cayenne capsuls before you go out drinking and it's meant to completely cure your whiskey dick should you choose to engage in a little fun after your night out.
The reason that cayenne works is because it dilates blood vessels to improve bloodflow. One of the issues with whisky dick is that there is not blood being delivered to your penis, so this helps a lot. It's not foolproof though.