Inability to assess the safety of beta-, gamma- and delta- tocopherol and alpha-, beta-, gamma-, delta- and desmethyl-tocotrienol added for nutritional purposes as sources of beta-, gamma- and deltatocopherol and alpha-, beta-, gamma-, delta- and desmethyltocotrienol in food supplements and the bioavailability of beta-, gamma-, delta- tocopherol and alpha-, beta-, gamma-, delta- and desmethyl-tocotrienol from the different sources, based on the supporting dossiers