Docosahexaenoic acid or eicosapentaenoic acid or docosahexaenoic acid-derived eicosapentaenoic acid is used for manufacturing a pharmaceutical composition for treating a pathology associated with cellular oxidative damage. It is 20-100, preferably 66-100 wt.% and incorporated into a monoglyceride, diglyceride, triglyceride, phospholipid or ethyl ester. ACTIVITY : Neuroprotective; Nootropic; Antiparkinsonian; Ophthalmological; Cardiant; Cerebroprotective; Antiarthritic; Vasotropic; Antiinflammatory; Nephrotropic. No biological data given. MECHANISM OF ACTION : None given.