Goldenseal was used by
Native Americans both as a
yellow dye and for its
curative properties. It has
antimicrobial properties and is said to strengthen the functioning of the
liver. It is
dangerous when ingested in
large quantities however. Goldenseal is also very
expensive--it's popularity over the last few years has lead to
overharvesting of the
wild herb, and many
herbalists now consider the plant
off-limits to provide for its
replenishment.
Goldenseal is often combined with echinacea in herbal medicines to give a one-two punch in curing various illnesses. It's an extremely powerful substance, and can cause a disruption in intestinal flora if taken too much. You really only want to take it if you're really sick, and only for short periods.