I do get mine from a doctor. I've heard you can get it off the internet a lot cheaper but I was also told here in Cali if you don't have a rx for it and get caught with it, you get introuble for having a controled substance. I haven't bothered to check and see if thats true or not. The only side effects I have are dry mouth, sleeplessness and i tend to get pretty moody from what i hear
. Good luck!
~Sabrina