Originally Posted by
JMS
There is much more caffeine in green tea than there is in coffee! the more the tea is roasted the less caffeine per cup! Same with coffee, the darker the roast, the less the caffeine! Black teas on the other hand are fermented and oolong teas only slightly fermented. I am not certain of the effect of fermentation on the amount of caffeine though.
I asked the question because what you described sounded more like too much caffeine as opposed to caffeine withdrawals, which typically give you a headache!