Deal with the drugs first, it's way more important than a wisdom tooth! There is help and it is possible to quit - if u want to. And yeah, Ritalyn (speed) should not have been given to you IMO. Good luck try 12 step.
My advice to you is that you stop using! Drugs, unless prescribed by a doctor, are harmful! I'm sorry to hear that you were put on ritalin at all. This could very well be what has given you the craving to use/abuse other drugs. I wish the best for you and strongly advise you to tell you doctor. Best of luck!
I am not familiar with drugs and side effects. Your best bet would be to call and ask your pharmacist.