Mega SOD is not ONLY antioxidant to the rescue of some potential damage linked to oxidative stress. Moreover, Mega SOD is 100% natural antioxidant with patented extraction method from plants and has the advantages of high purity and powerful activity. In contrast with the SOD in the market which only consists of SOD1, Mega SOD contains all three isoforms (SOD1, SOD2 & SOD 3) which is totally superior than those ordinary SOD extracted from plants.