The best replacement for sleepiness is fatigue.

The best alternatives to sleepiness are rated as following:
★★★★★  fatigue
★★★  excessive daytime somnolence
★★★  drowsiness
★★★  tiredness
  narcolepsy
  tiredness \u0026 fatigue

Your alternative for sleepiness is not listed? Suggest!
Speaking about sleepiness, one probably shouldn't forget about antidepressants.

Other search terms related to sleepiness and their ratings are:
★★★★★ antidepressants
You have in mind a companion for sleepiness and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sleepiness in all years. Click on graph for more.
sleepiness
fatigue
excessive daytime somnolence