Taraxacum officinale (dandelion), a flowering perennial herb of the family "Asteraceae," native to Eurasia, shows the cosmopolitan distribution. Titled "King of weeds" in literature, the plant has been used as a traditional botanical remedy to treat various bacterial infections and hepatobiliary problems. Taraxacum officinale is used as food, beverages, desserts, and a biomonitoring agent. Phytochemistry of the plant shows diverse compounds like flavonoids, terpenoids, triterpenoids, sesquiterpene lactones, sesquiterpenoid phytoalexin, phenols, free sterols, coumarins, saponins, flavones, steroids, and amino acids. The plant possesses diverse pharmacological activities, including anti-oxidant, anti-inflammatory, chemotherapeutic, hepatoprotective, hypolipidemic, anti-atherogenic, hypoglycemic, immuno-modulation, anti-bacterial, anti-viral, diuretic, and gastrointestinal. This review will describe the phytochemistry, properties, and pharmacology of Taraxacum officinale. Introduction Taraxacum officinale is a herbaceous plant included in the family Asteraceae. The word "Taraxacum" originates from the Arabic word "tarakhshaqun" or from "talkh chakok" which means unpleasant herb. The word officinale "actually means belonging to an "Officina" which in the past means storeroom of a religious house where medicines and other essentials were kept. Taraxacum officinale is commonly called Dudal, Radam, Bathur and Haend in the Indian Himalayan area. It is acquired from the French word "dent de lion," meaning tooth of the lion because of the serrated border of its leaves. The plant is native to Europe and Asia, also distributed to North America and the moderate area of the Arctic hemisphere. It is found all over the Himalayan mountains on nordic pastures and hills in India. The plant is generally a perennial herb up to 40cm altitude having spatula-like leave and yellow blossoms flourishing throughout the year. The leaves arise directly from the taproot in a rosette, and every sixth leaf overlaps in a basal rosette. Taproot is thick and branched up to 2-3cm in diameter and 1-2 m in length. The basal rosette gives rise to peduncles, 5-50cm high, reducing in width along their length from bottom to top. Every peduncle bears an extreme head of 2-5 cm wide, subtended by an involucre with herbaceous leaflets in two chains. The capitulum comprises 250 ligulate, perfect, bisexual and yellow florets, with each flower consisting of 5 fused petals and 5 fused stamens. There is no difference between a ray and disc floret, both morphologically and functionally. The fruit is a cypsela (Grieve, 1931) [19]. Taraxacum officinale is also recognized as the "King of Weeds" due to its limitless uses. It is also used in traditional and ayurvedic medicinal systems. It also has numerous anti-diabetic, anti-cancer anti-oxidant, anti-inflammatory, anti-microbial properties (Gonzalez-Castejon et al, 2012) [18]. It is also used to treat various bacterial infections and is a traditional botanical remedy. These properties are because of bioactive compounds, including terpenes, flavonoids, and phenolic compounds obtained from various parts (Chadwick et al, 2013; Mir et al, 2013) [8, 33]. It also contains sesquiterpene lactones, and most of the sesquiterpene occur as glycosides.