Should one on chemo (xeloda+eloxatin+zometa) take multivitamins, calcium, antioxidants, resveratrol, digestive enzymes, fish oils, curcumin etc?

Xeloda-oxali. You may want to stop your multivitamins while you are on Xeloda as Folic Acid may exgerate side effect of xeloda. You also need to have your vitamin d level checked and take a supplement if the level is low as vitamin d deficiency may affect the response to chemotherapy.
No known harm? Buy the best of my knowledge there should be no adverse interaction. However the big caveat receiving chemotherapy and nutritional support via supplements you take is the specific lack of research on potential multidrug/supplement interactions. So a guarded answer by me.

Related Questions

70 years male, stomach cancer metastasized to liver&bone, on (xeloda+eloxatin+zometa), can or should he take antioxidants during chemo?

Probably not. . The general principle is chemotherapy is trying to inflict damage on cells. Ask your oncologist...Therefore probably best to avoid supplements. Read more...
May help, not hurt. Generally antioxidant supplements when used in recommended dosage along with healthy diet/exercises should not do you harm. In your case of multiple chemo agents being used for cancer, antioxidants may help reduce some oxidative stresses that your body is undergoing at this time. However, i would recommend that you let your physicians know about what you taking so they can monitor. Good luck. Read more...
No. There is no benefit I am aware of with antioxidants helping chemotherapy. There are theoretical reasons why antioxidants can impair chemotherapies ability to kill cancer cells. I would not take additional unproven supplements without a md approval or without being on a clinical trial to study it. Anti-oxidants have harmed people in randomized studies. The won't harm, might help mantra is out. Read more...