Zanthoxylum tetraspermum

Zanthoxylum tetraspermum, commonly known as Indian prickly ash, has a long history of use in traditional medicine across South Asia. Among the Tamil farmers of southern India, the dried leaves are steeped in hot water to produce a mild tea that is taken to relieve cough and sore throat, as documented in the Ayurvedic Pharmacopoeia of India, 2015. In Sri Lanka, the Sinhalese people prepare a decoction of the bark with water to treat asthma and bronchitis, reported by Perera et al., 2012. The tribal communities of the Western Ghats use a poultice made from crushed bark and fresh fruit pulp to soothe skin irritations and minor wounds, as noted by Gupta & Singh, 2014.

To make a mild leaf tea, take 5 g of dried Zanthoxylum tetraspermum leaves, add 250 ml of boiling water, cover, and steep for 10 minutes. Strain and drink two cups per day. This preparation is safe for most adults, but pregnant or lactating women should avoid it because the plant contains alkaloids that may stimulate uterine contractions.

The therapeutic effects of the plant are attributed to a range of phytochemicals that have been isolated from its leaves, bark, and fruit. Key constituents include piperidine alkaloids such as sanshool, which have antispasmodic and analgesic properties, and essential oils rich in limonene, linalool, and β‑pinene that provide anti‑inflammatory and antimicrobial activity. Flavonoids like quercetin and kaempferol also contribute antioxidant effects that support the plant’s traditional use for respiratory and skin conditions.

Recent studies in the Journal of Ethnopharmacology (2023) have confirmed the anti‑inflammatory activity of a standardized bark extract, and the fruit is now marketed as a spice in Indian grocery stores under the name “prickly pepper.” The plant remains an important resource for local healers and continues to be investigated for novel therapeutic agents.

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