I, too, have recently been turned on to green tea. I've been enjoying the Republic of Tea varieties. The jade one with mint is unsweetened, but you could never tell. I'm a southerner, too, and thought I'd never kick my "sweet tea" addiction.
As for your question about how much is too much, I'm not much help. I can tell you a colleague of mine took green tea pills and drank a lot of it daily (like three to five big glasses), and she stopped because things started turning green, like the whites of her eyes, her pee and poo
I drink about two 12-ounce glasses a day on ice, but I don't take the pills. I haven't noticed any of the effects my friend did, thank goodness. I wasn't even aware of any weight-loss effects associated with it. I'd just read about the antioxidants and figured it must be better than the sugery processed stuff I'd been drinking.
Good luck & Cheers
L.
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