Botanical Name: Withania somnifera (L.) Dunal
Family: Solanaceae
Synonyms: Physalis somnifera L., Withania kansuensis Kuang & A. M. Lu
Vernacular Names: Across various languages and regions, it is known as Ashwagandha (Hindi and Sanskrit), Amukkara (Tamil), Penneru Gadda (Telugu), Ashvagandha (Bengali), and Asgandh (Urdu). The name “Ashwagandha” is a combination of the Sanskrit words Ashwa (horse) and Gandha (smell), referring to the root’s unique aroma.
Classification: A perennial, evergreen to semi-deciduous undershrub. Within the Solanaceae family, it belongs to the same group as tomatoes and potatoes, though it is valued for its woody roots rather than its fruit.
Habitat: Native to the drier regions of India, Pakistan, and Sri Lanka. It is also found across the Middle East and parts of Africa. It thrives in stony, well-drained soils and arid to sub-tropical environments.
Morphology: The plant typically reaches a height of 35–75 cm. Its leaves are simple, ovate, and dull green, reaching up to 10 cm in length. The flowers are small, greenish-yellow, and bell-shaped, appearing in axillary clusters. The fruit is a globose berry that turns orange-red when ripe and is protected by a persistent, enlarged calyx. The root is fleshy, tapering, and brownish-white.
Useful Parts: Primarily the roots are used in medicinal preparations. The leaves and seeds are occasionally used in specific traditional topical applications or for milk-coagulation.
Chemical Composition: The primary active constituents are steroidal lactones, specifically withanolides (including Withaferin A and Withanolide D). It also contains various alkaloids such as withanine, somniferine, and anahygrine, as well as saponins, iron, and amino acids like choline and glycine.
Pharmacological Action: Ashwagandha is primarily valued as an adaptogen, helping the body maintain homeostasis under stress. It exhibits anxiolytic (anxiety-reducing), anti-inflammatory, and immunomodulatory actions. It is frequently used to treat conditions such as insomnia, nervous exhaustion, general debility, and joint-related inflammatory disorders like rheumatoid arthritis.
Formulation: Traditional applications include the Churna (powdered root) mixed with warm milk, honey, or ghee to enhance absorption. It is also formulated into Arishtas (fermented liquid decoctions), Ghritas (medicated ghee), and Lehyams (herbal jams) for long-term rejuvenation and vitality.
Rasa: Tikta, Katu,Madhur
Guna : Laghu, Snigdha
Virya: Ushna
Vipaka: Madhura