Disclosed is a food, beverage or medicinal material which is safe and readily available, does not undergo the deterioration in flavor when combined with another food material or material, is suitably applicable to foods, beverages and medicinal agents, and has a wake-time-extending activity. It is found that an oxidized carotene derivative derived from a terrestrial animal, a terrestrial plant or a microorganism has an activity of shortening a sleep time and extending a wake time.
