Other roots are substituted for it, notably that of Panax quinquefolium, distinguished as American ginseng, and imported from the United States.
Take a herbal supplement. echinacea, garlic and panax ginseng can all boost your immune system.
Red Kooga supplements contain the finest quality panax ginseng which has been used in the orient for thousands of years.
Not to be confused with American ginseng or Siberian ginseng, the National Institute of Health's reference website Medline Plus indicates that panax ginseng may be used to treat pain associated with fibromyalgia or chronic fatigue.
Take care if using panax ginseng as a regular supplement; it may be unsafe to use for longer than three months at a time.