How to safely come off Vicodin?

Hello I have been on Vicodin for about 4 months now due to a stomach problem. Well I'm sick of needing it and decided to stop the pills, and to my extreme surprise I experienced with drawl symptoms. I couldn't believe it, now I need to know if anyone can tell me how to safely come off this drug with out the with drawl symptoms. I have never done any drugs of any kind.. I dont even smoke cigarettes and I dont want to have to need this drug anymore, I'd much rather deal with the stomach pain! Any advice is much appreciated. Thank you.