. "\"The chemical reactions and pathways involving vitamin E, tocopherol, which includes a series of eight structurally similar compounds. Alpha-tocopherol is the most active form in humans and is a powerful biological antioxidant.\" [GOC:jl, ISBN:0198506732]" . . "vitamin E metabolic process" . "tocopherol metabolic process" . "tocopherol metabolism" . "vitamin E metabolism" . . . . "alpha-tocopherol metabolic process" . "alpha-tocopherol metabolism" .