I have tried almost everything under the sun with diets and supplements. The best things I use now are:
Flax Seed Oil (omega 3), it helps with my skin, constipation and joint stiffness/inflammation.
Multivitamin
Vitamin C - extra antioxidant
Cranberry extract - 2x a week (antioxidant)
Cinnamon - supposedly lowers cholesteral (mine is not high but I use this just in case)

Who knows what really works, this is what helps me. I also eat green leafy veggies, limit red meat and only use whole grains (kasha, brown rice, etc)

Good luck to you!