For my IC/CPPS, in addition to skilled relaxation for 20 minutes, two times a day (which is already helping relieve the muscle tension in my pelvic region after only 6 weeks!! http://askwaltstollmd.com/cystitis.html ), Algonot/Prosta Protek, and 50 mg Hydroxyzine at night
I am going to start taking Perfect Food
http://newenglandnutritives.com/perfect_food_powder.htm
A whole food concentrate like this would be incredibly superior to any synthetic multi-vitamin a person could take. Multi-Vitamins are so unnatural and missing tons of ingredients that allow whole foods benefit's to work synergistically.
I wouldn't be the best person to explain this, but it all relates to the fact that multi-vitamins could never even come close to having the health benefits of eating vegetables. Most nutrition experts suggest eating 5-10 servings of fruits and vegetables a day.
Unfortunately the beneficial ingredients in fruits and vegetables have greatly decreased over the years.
Anyhow I saw Perfect Food at a health market in my town, and you can order it online for cheaper.
Here's another interesting article about it, very interesting stuff.
http://www.tldp.com/issue/perfec~1.htm