All natural. Made from green & black tea leaves. Natural lemon flavor with other natural flavors. Snapple is made from the best stuff on Earth (we're not tooting our own horn; it's right on the bottle). We use green and black tea leaves with natural antioxidants (Contains 71 mg per 1 cup serving of natural antioxidants [as tea polyphenols]) and filtered water. Put it all together and you've got a taste worth bragging about it.