The PC oncologist recommends avoiding antioxidants such as CoQ10 and turmeric until after the radiation therapy, reason being one doesn't want to protect cells when you are nuking them. I take about 10 g/day of turmeric that has about 2 g/day of bioavailable curcumin (piperine [pepper] and lipids help absorption through intestinal walls). I take it to (hopefully) decrease my risk of multiple myeloma. There are a number of brands, none regulated by the FDA; I take Qunol 1 gm tablets. Do they help? My plasma kappa curve has flattened but don't know if there is any cause and effect, or just chance. I don't have side effects, but some people do. https://pmc.ncbi.nlm.nih.gov/articles/PMC8464730/ https://pmc.ncbi.nlm.nih.gov/articles/PMC6429287/ https://pmc.ncbi.nlm.nih.gov/articles/PMC2820199/#:~:text=Alone%20or%20in%20combination%20with,%2C%20treatment%20or%20co%2Dtreatment.