It's funny to read about "a caffeinated drink called x" when I just slice & dice Jet Alert tabs into whatever mix I'm having. There are mornings when 30mg is enough to push my intuition to extreme levels, and there are days when 100mg does nothing until I find the right song on the radio. I am using caffeine and ibuprofen as experimental tools to fight depression and keeping logs on how things go. So far it's amazing…
How long have you been doing this? I was drinking a ton of coffee every day (4-6 cups of strong drip coffee) for the last 2-3 years. It helped a lot with my motivation and general energy levels. Recently (in the last year or so) I started getting some pretty significant mood swings, I'd basically feel horrible every week for Monday/Tuesday. I also had some alarming blood pressure measurements (up to 150/110 or someth…
Friendly advice: drop the sugar first. It's really really hard, I know...
Caffeine is most likely to mess up your mood when you also consume sugar, or alcohol. That's why green tea for example works much better: it's disgusting to oversweeten it, to mix it with sweets, or to have it immediately before or after a pint or two ;)
Coffee otoh can even be delicious in combo with fries, ice-cream and beer. Hence I only have it in the morning when I'm not tempted to mix it in such disastrous combinations.