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Yes, yes it does.
Usually coffee has much more caffeine than tea, however though some teas have as much caffeine as coffee, (suprisingly)!Coffee has twice as much caffeine as teaCoffee! It has twice as much caffeine as tea
Yes it does. The Caffeine Content in English Breakfast Tea is 3.4% of Total Weight (which is a significant amount compared to other teas). The caffeine content in tea is about half to one third to that of coffee. This tea gives a good energy boost compared to coffee coffee. Caffeine does not increase your risk of heart disease. It temporarily increases your sympathetic tone (increased heart rate, mild increase in blood pressure) but certainly doesn't "harden" your arteries. The hardening of arteries, atherosclerosis, is a process that occurs over many years in response to elevated LDL cholesterol, chronically elevated blood pressure, and several other factors including smoking.
7%
There is about 5% of caffeine by weight of the leaf material in tea plants, so 8.23g of tea should have 0.4115g of caffeine.
Chick-fil-A serves both sweet and unsweetened tea. The tea is freshly brewed everyday, however, there is no information on how much caffeine is in the tea.
The Wendy's website does not say whether or not strawberry iced tea has caffeine, but iced tea generally does, although not as much as coffee.
It depends on the tea. Herbal teas generally are caffeine-free. Green tea is caffeine-free. Black teas (Pekoe, Earl Grey, etc.) *do* contain caffeine.
Tea always has caffeine, but not as much as coffee. So, yes to your question.
Yes, earl gray black tea does contain caffeine.
Yes you can but it's not advisable to drink too much. It's the caffeine in the tea that can cause a lower than normal birth weight. English breakfast tea has a greater amount of caffeine, than "normal" tea. Four cups of tea a day is a guideline, so for English, I'd suggest only two cups a day. Any doubts, see your doctor, he's better qualified for this sort of thing. See related link for more information.
Caffeine free means that the product has "no" caffeine in it.