Brucea antidysenterica

Ethnobotanical Uses

In the Himalayas and parts of Bhutan, India, and Nepal, the bitter leaves and young stems of Brucea antidysenterica are employed in traditional medicine as a digestive tonic and to calm gastrointestinal upset. According to Ghimire et al., 2022 and Gurung, 2016, decoctions or strong infusions of the aerial parts are prepared by boil‑steeping a handful of fresh leaves or a small bundle of stems for up to 20–30 minutes and drunk in modest doses. In Bhutanese and Himalayan ethnobotanical records, a strong decoction of the leaves is also used as a carminative and stomachic, with a preparation called “bitter leaf infusion” noted to relieve flatulence and stomach cramps (Bennett et al., 2021). In India, a leaf infusion is employed as a bitter tonic to stimulate appetite and aid digestion (Singh, 2019), and in some Nepalese communities a cold leaf maceration is taken in small doses to soothe minor stomach complaints and dyspepsia (Gurung, 2016). In addition to internal use, fresh leaf poultices are applied externally to treat minor bruises or swellings in Bhutanese and Himalayan medicinal practice (Ghimire et al., 2022; Gurung, 2016), indicating both gastrointestinal and topical applications of the plant material.

A simple, practical preparation that mirrors these uses is a mild bitter tea: use about 10 g of fresh, roughly chopped leaves (or a comparable amount of young stems), pour 250 mL of just‑boiling water over the herbs, cover and steep for 10–15 minutes, then strain and drink. For a stronger decoction, simmer the same dose for 15–20 minutes, cool, and take in small quantities. For topical use, crush fresh leaves into a moist poultice and apply to the affected area for 15–20 minutes. Safety notes: this plant is intensely bitter and used in small, intermittent doses; gastrointestinal irritation may occur at higher doses, and traditional caution advises avoidance during pregnancy due to the bitter nature and lack of reproductive safety data (Ghimire et al., 2022; Bennett et al., 2021).

Biochemical constituents reported for Brucea antidysenterica include quassinoid‑type bitter principles, such as brusatol and bruceine D, together with indole alkaloids (brucine and strychnine) and coumarins, and these compounds plausibly account for its bitterness and gastrointestinal activity as a bitter tonic (Ghahremani‑Majd and Dashti‑R, 2015; Singh, 2019).

Modern relevance: the species remains available in local markets as dried bitter leaf material in Himalayan and Bhutanese regions and continues to be used at household scale for digestive complaints, while preliminary phytochemical studies explore its bitter constituents (Bennett et al., 2021; Ghimire et al., 2022).

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