How can I remove stains from my teeth?

A few weeks ago I had a stomach virus that kept me in bed for a few days. During that time I ate those pepto bismal tablets non stop and really didn't get around to brushing my teeth on account of being so sick. I didn't brush them for two days. By day 3 I started feeling better and got around to looking in the mirror and noticed that my top front teeth were stained brown due to the pepto (the pepto box warns of turning certain things "harmlessly black" but doesn't mention your teeth!) Anyway, I have scrubbed and scrubbed my teeth twice a day with my toothbrush and toothpaste but it won't budge. How can I remove these stains at home? If I have to go to the dentist then so be it but I'd rather try something at home first...