Goldenseal is a common North American plant that has been used medicinally for centuries by Native Americans for numerous cures and treatments. Goldenseal is most often combined with Echinacea to make the flu and colds lessen in duration, and the herb has many other uses both inside and out of the body. The root of goldenseal is the part most frequently used medicinally and can help with inflammation and infection in the mucus membranes of the upper respiratory tract. Goldenseal also contains anti-bacterial properties, which makes it helpful against amoebic infection. Goldenseal strengthens the body’s immune system, is a natural mild laxative, and cleanses the body. It is antiseptic, diuretic, and can even treat peptic ulcers and lower blood pressure.