Is one cup of green decaf. Tea per day enough as antioxidant or should I drink more. Is it good for me even if I have fibromyalgia.?

Anti oxidants. Anti oxidants are powerful tools used to fight off inflammation (weapons of your military).Greent tea has them but the best way to get them is diet: 9c/veggies&fruits/day:3cups from dark green veggies, 2 cups from cruciferous veggies (broccoli, cabbage, cauliflower, brussel sprouts), the onion family and then everything else. Glutathione, n-acetyl cysteine, & Alpha lipoic acid r good supplements.
Yes. This varies by brands. You need to make sure it is a good quality tea.