What works for me in addition to my equivalent of the caffeine pill is:

• An alarm that gradually gets louder. It's not even one of the traditional annoying tones, just kind of a gentle new-agey song. The key features seems to be the getting louder with time.

• Putting my underwear, clothing, glasses, and the alarm at my desk, away from the bed, so that I have to get up to turn off the alarm and by then it's not that much extra trouble to also get dressed, and I tell myself that if I'm still tired after that I can sit down at my desk, which is still better than rolling back into bed.