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Eleuthero
Description:
Eleuthero (sometimes known as Siberian ginseng) is more adaptogenic than its distant relatives American and Asian ginseng.
Eleuthero is often used as a digestive stimulant among underweight people.
Individuals who are depleted and fatigued who use eleuthero have reported increased alertness.
Recommended Dietary Allowances:
Eleuthero (Eleutherococcus senticosus) supplementation may improve athletic performance, according to preliminary Russian research.1 Other studies have been inconclusive and two recent double-blind studies showed no beneficial effect on endurance performance in trained men.2 3 4 Eleuthero strengthens the immune system and thus might reduce the risk of post-exercise infection. Although some doctors suggest taking 1 to 4 ml (0.2 to 0.8 tsp) of fluid extract of eleuthero three times per day, evidence supporting the use of this herb to enhance athletic performance remains weak.
Side Effects & Interactions:
Reported side effects have been minimal with use of eleuthero.5 Mild, transient diarrhea has been reported in a very small number of users. Eleuthero may cause insomnia in some people if taken too close to bedtime. Eleuthero is not recommended for people with uncontrolled high blood pressure. There are no known reasons to avoid eleuthero during pregnancy and breast-feeding. However, pregnant or breast-feeding women should be aware that some products may be adulterated with herbs that should not be taken in pregnancy, such as Asian ginseng. Only eleuthero from a trusted source should be used.
In one case report, a person taking eleuthero with digoxin developed dangerously high serum digoxin levels.6 Although a clear relationship could not be established, it is wise for someone taking digoxin to seek the advise of a doctor before taking eleuthero.
References:
1. Kelly GS. Sports nutrition: A review of selected nutritional supplements for endurance athletes. Alt Med Rev 1997;2:282–95 [review].
2. McNaughton L. A comparison of Chinese and Russian ginseng as ergogenic aids to improve various facets of physical fitness. Int Clin Nutr Rev 1989;9:32–5.
3. Dowling EA, Redondo DR, Branch JD, et al. Effect of Eleutherococcus senticosus on submaximal and maximal exercise performance. Med Sci Sports Exer 1996;28:482–9.
4. Eschbach LF, Webster MJ, Boyd JC, et al. The effect of siberian ginseng (Eleutherococcus senticosus) on substrate utilization and performance. Int J Sport Nutr Exerc Metab 2000;10:444–51.
5. McGuffin M, Hobbs C, Upton R, Goldberg A. American Herbal Products Association’s Botanical Safety Handbook. Boca Raton, FL: CRC Press, 1997, 45.
6. McRae S. Elevated serum digoxin levels in a patient taking digoxin and Siberian ginseng. Can Med Assoc J 1996;155:293–5.