Instant tea is a powder made by brewing a vat full of strong tea, then evaporating the water. Decaffeinated tea has had most of its caffeine removed. Tea drinks bottled as soft drinks contain tea, water, sweeteners, and flavorings. Herbal teas , made from leaves, stems, and roots of plants, contain no true tea and thus are caffeine-free. Green tea contains catechins, powerful phytochemicals that possess many health promoting properties.
Black tea contains similar phytochemicals.
Herbal teas in most popular mixes are safe and caffeine-free. Herb teas are enjoyable substitutes for caffeinated beverages and a good way to increase water intake. Tea contains caffeine , a chemical with many effects on the human body. Some people may need to restrict caffeine intake to prevent or treat certain symptoms or health problems. The health effects of herbal teas depend on the properties of the herbs and the strength of the infusion.