A very poor health choice. If you're 197lbs and 5'11" at 16 years of age and looking to steroids, I'm going to assume that you are somewhat chubby, out of shape..yes? Don't worry,..I was there too. The great news for you is that you don't need steroids to fix your current body situation. Honestly.
I guarantee you that if you go to the Diet section of the forums, and start a thread asking for 3J's help(he's a Mod here) he will help you. You're already big, a great diet structure and solid lifting protocol will get you jacked beyond belief and taller than 6', more than any steroid could ever do!
For your question,..I went to high school with some guys that got Dbols and Abombs(Dianabol and Anadrol), they puffed up and looked fat and stupid, then their girlfriends dumped them because they couldn't get hard and their balls were the size of peanuts, their hair fell out and they ended up with less muscle than they had before "juice".
Go to the diet forum.