The tea is caffeine-free, and you can brew it hot ... The taste of the tea is also an important factor to consider. Some teas may have a bitter or astringent taste, which may not be appealing ...
Like coffee, the amount of caffeine in tea varies depending on how it is brewed and the types of leaves used. Certain types of teas, such as yerba mate, have as much caffeine as weak coffees ...
“There is no good scientific evidence that caffeine or herbal teas improves asthma control or asthma symptoms, and there have not been any published studies that assess if any teas can relieve ...