Effects on Stress Electric shock and other physical stress manipulations are known to cause antinociception, or an increase in the threshold of pain, in experimental animals. The mechanisms of stress-induced antinociception are controlled by emotional factors such as anxiety and fear. Other scientists studied the effects Vietnamese ginseng saponins, especially R2, had on psychological stress and foot shock stress-induced antinociception in mice. It was found that acute administration of VG crude saponin significantly suppressed the antinociceptive response caused by the psychological stress. Among the varied promises of Ginseng are those of an increased physical stamina and a higher quality of life.
Many advertisers promise a feeling of an increased overall well being.
Scientists in Sweden conducted a double-blind, randomized study with a 12 week duration to determine the effect of ginseng extract G115 on the quality of life. The results of the study showed an improvement in the quality of life of both groups, showing an improved alertness, relaxation, appetite, as well as an improved overall score, although a more pronounced improvement was seen in those taking the extract. It was concluded that treatment with the combination of active substances had significant advantages over placebo therapy. One experiment was cited by Betty Kamen, Ph.D., whose qualifications as an expert include her experiences as a nutritionist, author, lecturer, and radio-TV host. This study involved sailors on a two-month voyage.