The term "steroid" refers to the chemical shape and structure of various hormone molecules. There are various steroid hormones found in the human body.
You are talking about anabolic steroids, synthetic versions of testosterone.
Do they work??? Yes, especially if you want big muscles. But at what cost???
Testicular atrophy, baldness, severe acne, severe mood swings, violent outbursts, liver and kidney damage, increased stroke and heart attack risk are some of the more common side effects.
Also, you might get some jail time if you get caught with them, especially if you have large quantities "for sale."
Dude, it's not even close to being worth it if you are a pro, and even more ridiculous for anyone else to even consider. However wrong it might be, pros will go to desperate lengths to make sure they keep their jobs.
Drug use in the peloton will never be eliminated until every rider is ****** at the end of a race, not just random testing.
Don't take them. If you won a race on them, your victory will be hollow. When you dope in racing, you cheat the fans, you cheat your sponsors, and you cheat yourself. Don't do it!!!