Herbal Supplement 2.5% Guggulsterones GMP Quality Assured A Dietary SupplementGuggul Extract is a purified extract isolated from the crude guggul gum of the small Commiphora mukul tree in India. The two active components Z-Guggulsterone and E-Guggulsterone are present at an average of 2.5%. Other components of Guggul Extract include diterpenes, sterols, steroids, esters and fatty alcohols. This ancient medicinal plant is referenced in the classical Ayurvedic medical text "Sushruta Samhita" for its traditional benefits.