Astragalus dissectus

Inula helenium has a long history as a warming, respiratory herb. Among the Khatri community of Punjab, Pakistan, dried root was regularly made into tea for coughs and asthma (Ahmed et al., 2006). In the Western Himalaya, decoctions of the root were used for chronic bronchitis and bronchial catarrh (Ahmed & Ahmad, 2020), while in parts of Iran and parts of Central Europe the same infusion was taken for colds and as a digestive tonic (Gurbuz & Heinrich, 2004; M. Heinrich et al., 2004). It was also taken as a general strength and convalescence tonic (Sperber, 2003). To prepare a mild root tea, simmer about 6–12 g of dried, sliced root in 250–500 ml of water for 15–30 minutes, cool, and sip 1/2–1 cup several times daily during an acute cold or cough. Do not use in pregnancy; children and long-term use require supervision. A 1:5 ethanol tincture is made by macerating 100 g sliced, dried root in 500 ml of 40–50% ethanol for 2–3 weeks, shaking weekly, then straining and pressing. Typical adult dose is 1–2 ml 2–3 times daily for respiratory relief.

Key constituents reported for this species help explain its traditional actions. Isoalantolactone is a prominent sesquiterpene lactone, accompanied by alantolactone and related helenalin-type compounds, flavonoids such as quercetin and rutin, and polyacetylenes including falcarindiol (Gurbuz & Heinrich, 2004; Gertsch, 2011; H.-M. Ernst et al., 2018). These molecules account for the plant’s bitter, warming character and its expectorant and carminative effects.

Modern relevance is visible both in research and in the marketplace. Recent studies show the sesquiterpene lactones possess notable anti-inflammatory activity against NF-κB and TNF-α, while polyacetylenes demonstrate anti-bacterial and neuroprotective potential (Ravipati et al., 2012; Bohm et al., 2015; Jiang et al., 2020; Liang et al., 2022). Derivatives are under investigation as anti-tumor and anti-diabetic leads (Gao et al., 2011; Sun et al., 2015). Commercially, elecampane root continues to be sold in pharmacies and herbal shops throughout Europe and Asia as a tea, tincture, syrup, and lozenge, and rural communities still prepare the home decoction during winter for cough and congestion.

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