I used mederma as well
I also read somthing about vitamin E increasing risk of a secondary H&N cancer


"While it was once hoped that supplements of folic acid could help reduce colon cancer, new research has shown that taking more than the minimum daily requirement would be harmful. Simon says other studies underscore the downside to dietary supplements, which are unregulated in the United States. "The most striking example is beta carotene which we used to be very hopeful about, but actually increases the risk of lung cancer in smokers. Vitamin E increases the risk of second head-neck cancers in people who have been successfully treated for a first malignancy."


this is under the news section here of the OCF