Lipid peroxidation products are elevated in fish oil diets even in the presence of added antioxidants.
Gonzalez MJ, Gray JI, Schemmel RA, Dugan L, Welsch CW. Lipid peroxidation products are elevated in fish oil diets even in the presence of added antioxidants. J Nutr. 1992 Nov; 122(11):2190-5.