If they are pretty bad, then you can go to the doc. Different doctors give different things, but I know you can get some antibiotics which you just apply to your face, so you don't have to take tablets. One of my friends was put on the pill by her doctor to help them, but she said it just made her depressed.
If you dont think its that serious then you can just try to see if something is causing them, stress, maybe some types of food...