Xenical can remove some essential, oil-soluble vitamins from your body so it is recommended that you take a multi-vitamin alongside it. You also shouldn't take it at the same time as your Xenical, I take mine just before bed.
Green Tea, drink or tablets, is the most amazing antioxidant. My sister was recommended it by a Head Nurse at the Cancer treatment ward when she had Breast cancer, She now has an incurable but treatable Lung Cancer and can have tablet treatment instead of chemotherapy as her liver is in such good condition and the consultant believes it is because of the Green tea, so all the family is on it.
BTW we did ask for a second opinion of the state of her liver as all the family enjoys a frequent glass or three of wine arty0036: