thermorexin is just as potent but cheaper as compared to those high end brands. but it contains caffeine.
levorex is the same with thermorexin but none of the caffeine. instead they put carnitine (del monte's fit n' right's main ingredient) in lieu of the stimulant.. this is especially better for those who experience jittery and palpitation with the stimulant-loaded fat burners.
both are not yet being sold here. i know somebody in manila who does.