As a security guard and cop on mostly midnights I have had about every kind of coffe. The Caffine is a stimulate. I once read that nicotine and Caffine are the two most abused drugs....never had thought about the coffee having a drug.

That would makes sense that Caffine it self, or if taking any medications it could interact. I can manage two cups/mugs a day, but that is rarely everyday. I like my hot Earl Grey Tea, cold green tea.

I don't really have soda anymore but, there is a lot of Caffine in that too. Working as a beauty salon manager I had a gal that could not start her day without popping open her Cola.
Take care Steve,
Di