Metathione is Glutathione. Metathione is a brand of glutathione, so there is no comparison to that, maybe state the name or brand of the glutathione that you currently is taking and then you compare Metathione to that
it has already been 2 month and a couple of weeks, you should have seen lightening already, are you taking the right amount of dosage for your body to achieve lighter skin? otherwise, your 2 months and a couple of weeks will just be good enough for skin improvement.
hope it helps! just keep your Q's coming, if you stioll got some