I-Alpha-tocopherol synthetic (i-Tocopherol, i-Alpha-tocopherol yokwenziwa, i-vitamin E, i-E307) iyi-antioxidant evikela amangqamuzana emonakalweni ngokunciphisa i-oxidation ye-lipids (amafutha) kanye nokwakheka kwama-radicals mahhala.
I-Alpha-tocopherol yaziwa ngokwesiko njenge-antioxidant ye-biological enkulu kunazo zonke emzimbeni womuntu. Isilinganiso somsebenzi kavithamini E kumayunithi wamazwe ngamazwe (IU) sasisekelwe ekwandeni kokuzala ngenxa yokuvimbela ukuphuphuma kwezisu okuzenzakalelayo kumagundane akhulelwe lapho ethatha i-alpha-tocopherol. Ikhula ngokwemvelo cishe ngo-150 % wenkambiso emzimbeni kamama ngesikhathi sokukhulelwa kwabesifazane.
I-1 IU kavithamini E ichazwa njengokulingana kwezinto eziphilayo namamiligremu angu-0.667 we-RRR-alpha-tocopherol (ngaphambilini eyayibizwa ngokuthi i-d-alpha-tocopherol noma i-milligram engu-1 ye-all-rac-alpha-tocopheryl acetate (eqanjwe ngokuhweba ngokuthi i-dl-alpha-tocopherol, i-d yoqobo, i-l-synthetic molecular compound, ebizwa ngokufanelekile ngokuthi 2-ambo-alpha-tocopherol, ayisakhiqizwa).