I've recently started taking 200mg caffeine pills in the morning instead of coffee. A very cheap and easy way to boost energy in the morning, within about 15 minutes you really want to get out of bed, and no need to walk to the coffee machine. 200 pills are about $5, which is a lot cheaper than coffee. I'll probably tone down the dose, because it's the equivalent of 3 espressos, which is a bit much. I would normally…
Also I find that eating a good meal with fats before taking caffeine works better for me. Otherwise I feel sleepy after caffeine.
Also, for faster absorption, I put it under my tongue and let it dissolve. That’s the fastest way to see the effects.