Seldom is a supplement as effective as a medicine. Even more rarely is a supplement truly helpful for cancer, preventing a side effect of essential medicine for which physicians have no good treatment…except to lower the dosage of the medicine.
But Vitamin E effectively prevented the painful numbness and tingling of neuropathy from cisplatin and paclitaxel (Taxol), usually given for breast cancer, ovarian cancer and lung cancer.
This cancer chemo study used the best design: a randomized, controlled, open-label trial, but had only a few patients: 16.
These people received 600 mg of alpha tocopherol (approximately 600 IU of synthetic d-alpha) per day during chemotherapy administration and for three months thereafter.
You can find exactly this type of vitamin E here.
Relative risk of developing neurotoxicity–the painful numbness and tingling– was 66% higher in those who did not receive vitamin E.
Supplements (and food) are disease-specific: use them as medicine. Carefully.