Unless it specifically states that it's been decaffeinated, then yes. Tea, without any other qualifiers ("herbal", or the name of some specific plant), is prepared from the leaves of the tea plant Camellia sinensis, which naturally contain caffeine.
Bigelow, the producer of the Constant Comment brand, rates it as 30-60 mg per serving, which is typical for black tea.
Yes, Ceylon tea does contain caffeine.
No it is a herbal tea that does not contain caffeine!
Herbal tea may still contain caffeine, which is a drug
Yes it does.
Read the label. If it does not contain caffeine, it would say caffeine-free. Otherwise, there is probably caffeine in it.
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.
i would like to know as well
No. it does not contain caffeine. See the related link below.
Gyokuro green tea has the most caffeine of all green teas with the exception of matcha.
It all depends on the tea. Tea that comes from the tea plant, does contain caffeine. The highest caffeine content is in black tea. Green tea has less than that and white tea has the lowest quantity of caffeine of all. Herbal teas, on the other hand, are infusions made with herbs. Most herbs don't contain any caffeine, so herbal tea tends to be caffeine free.
No, mint is an herb that is used to make mint tea. It does not contain caffeine because it does not come from the tea plant Camellia siniesis. However it does still make excellent tea.