The investigators conduct a 8-week, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of ginsengberry concentrate on fatigue.

Previous studies have indicated that ginseng root may have the ability to improve fatigue. Therefore, the investigators conduct a randomized, double-blind, placebo-controlled study to investigate the effects of ginsengberry concentrate on Improvement of Fatigue in adults; the safety of the compound are also evaluate. The Investigators examine FSS(fatigue severity scale), CIS, lactate, Ammonia, Exercise test at baseline, as well as after 4 and 8 weeks of intervention. 88 adults were administered either ginsengberry concentrate or a placebo each day for 8 weeks.

Inclusion Criteria:

- CIS > 76 points

Exclusion Criteria:

• A person who feels tired due to surgical operation within 6 months.
• drug/alcoholic hepatitis, cirrhosis, and fatty liver
• anorexia or bulimia
• a person on night duty, shift work, or heavy redundancy
• A person who is unable to perform an exercise load test
• A person who implements professional exercise therapy, counseling therapy, etc. within two months of visit 1 to improve chronic fatigue.
• A person who has used drugs, functional foods, health supplements, and herbal medicines within two months of visiting to improve chronic fatigue.
• A person who continues to exercise regularly within three months of visiting
• Immunosuppressants, sleep-inducing drugs, antidepressants, sleeping pills, and antihistamines