Vicodin is perscribed for mild to severe pain often after a surgery, but sometimes for long-term use. Vicodin is produced by Knoll Labratories and comes in three varieties. Vicodin (5 mg hydrocodone, 500 mg acetaminophen), Vicodin ES (7.5/750), Vicodin HP (10/660). There is also many generic variants of Vicodin.
Vicodin is often taken for recreational use because it gives an amazing, euphoric body high. Vicodin is most commonly taken orally in pill form or crushed up and insufflated (snorted). Snorting results in slightly more powerful effects which come into effect much faster. Acetaminophen is extremely harmful to the liver in high doses (2,000+ mg) so often times, for recreational use, people will extract the hydrocodone from the pill resulting in an extremely vile liquid which can be taken orally or rectally via syringe (not very common, but people do it).
The most common side effects include itching, nausea, paranoia, and intense sweating even if it's not really hot. The severity of the side effects depends on the dose taken. 10-15 mg is considered a moderate dose and 20-30 mg is a high dose. Some people will even take around 60 mg but this isn't very smart because the side effects will be so severe you will not enjoy the experience at all.
When used as directed for pain, it does a very nice job of eliminating pain and producing a calm feeling that it both unobtrusive and pleasant.
When taken recreationally in low doses, a feeling of tiredness washes over one typically 1-2 hours after ingestion. If you lie down, you feel very understanding, calm, and may feel like you have the solution to every problem in the world. You will not be able to sleep, even though you feel very tired. Dry mouth often occurs, and a mild hangover is not uncommon.
When taken in high doses recreationally, an overpowering feeling of fatigue will force you to a bed or chair. An extremely strong wave of warmth and "fuzzy tinglies" wash over you. You feel like you have never been this stoned in your life. It will make you very stupid, and even unable to speak or think properly. A strong hangover will greet you the next day.
Warnings: In high doses, the acetominophen (tylenol) in vicodin is very toxic to your liver, so it's not a good idea to drink alcohol when under vicodin influence. Also, addiction to vicodin is not uncommon (anyone who's seen house knows what I mean). It can reduce your ability to do simple tasks, such as using the bathroom (I found that out the hard way). It is very fun though. Enjoy
Mike: Yeah man. You want a high or low dose?
Steve: I'm looking to be stoned dude. 8 pills please.
Mike: Here you go. I'll just take four.
Steve: See you in Mars dude.
And when you hear this crap about how they have to charge so much because of research costs, try to get a comparison of research and marketing costs for the same drug. Good luck.