Lapachol is a naphthoquinone that was first isolated from Tabebuia avellanedae (Bignoniaceae). Lapachol shows anti-abscess, anti-ulcer, antileishmanial, anticarcinomic, antiedemic, anti-inflammatory, antimalarial, antiseptic, antitumor, antiviral, antibacterial, antifungal and pesticidal activities.