Vitamins unlikely to revitalize the mind.  There is little proof that taking supplements prevents cognitive decline or dementia.
D000367:Age Factors; D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology; D001361:Avitaminosis / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy*; D003072:Cognition Disorders / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008609:Mental Status Schedule; D008875:Middle Aged; D009751:Nutritional Requirements; D014815:Vitamins / Q000008:administration & dosage*
D014815:Vitamins