Guggul is the gum resin obtained from a variety of plants native to India, Bangladesh, and Pakistan. This tree has been used in Ayurvedic medicine for centuries. Guggul is used for acne, hardening of the arteries (atherosclerosis), weight loss, and other conditions, but there is no good scientific evidence to support most of these uses. Guggul contains plant steroids that lower cholesterol and triglycerides. One of these substances also decreases the redness and swelling that occurs in some types of acne. Guggul is also known as guggal, gum guggal, gum guggulu, and gugulipid.