PROBLEM TO BE SOLVED: To provide a novel composition which has an excellent fatigue improving effect.SOLUTION: The invention is a composition containing black ginger, black pepper, black soybean testa, black sesame, and fermented black onion. Each material may be used as it is, and may be used as processed goods. As processed goods, any of pulverized powder, juices, extracts, and treated materials by other processing methods can be utilized, and any method can be used if it is a method generally used as a method of obtaining their processed goods. The composition can be used as it is or by mixing with other components as parenteral drugs, oral drugs, and the like.