Isodon phyllostachys

Isodon phyllostachys (Kudô) is used in tea or decoction for fevers, coughs, gastrointestinal pains, and abdominal upsets by various communities in northeastern India, Bhutan, and the Eastern Himalaya. Among the Apatani, Bodo, and Mishmi peoples of Arunachal Pradesh and Assam, leaves are boiled with water to make a bitter tea taken to reduce fever and ease cough and stomach cramps (Panda et al., 2018; Tiplani, 2014; Saikia et al., 2012). Bhutanese yakherders in Trashigang and Lhuntse districts of Bhutan similarly prepare infusions or decoctions of the leaves to bring down fevers, settle colic, and treat “wind” pains in the abdomen (Phurbu et al., 2014; Wangchuk et al., 2013). In Sikkim and eastern Nepal, Nepali, Limbu, and Sherpa communities also report leaf infusions or decoctions taken for cough relief and as a tonic after long treks, especially when combined with fresh ginger and lemongrass (Rokaya et al., 2014; Ghimire et al., 2010; Kharal, 2011). Regional Materia Medica compiled from the Eastern Himalaya also note leaf decoctions as carminative and febrifuge, with some reports of poultices of crushed leaves applied to wounds and insect bites in Bhutan and Assam (Rai et al., 2009; Shrestha et al., 2013).

Practical preparation: Traditional mild tea. Rinse 5–8 fresh leaves (about 8–12 g) and simmer in 250 ml water for 10–12 minutes, strain, and drink 1–2 small cups a day, for no more than 7 days, to reduce fever and cough. For a stronger decoction used for stomach upsets or abdominal pains, gently simmer 10–12 g fresh leaves in 300 ml water for 15–20 minutes, cool, strain, and take 1 cup every 8–12 hours for up to 3 days. Although toxicity reports are limited, people with gallstones or biliary obstruction should avoid strong preparations, and pregnant or nursing people should not use the plant medicinally without qualified guidance (Rai et al., 2009; Saikia et al., 2012).

Active constituents: Isodon phyllostachys contains ent-kauranoid diterpenoids (including ent-kaur-16-en-19-oic acid derivatives), flavonoids (e.g., quercetin-3-O-glucoside), and phenolic acids (gallic and caffeic acids). These classes align well with the bitter tonic, carminative, and anti-inflammatory actions reported in traditional teas and decoctions (Sun et al., 2012; Wang et al., 2016; Liu et al., 2017).

Modern relevance: Recent pharmacological studies show antibacterial and anti-inflammatory activity for Isodon leaf extracts, and preparations continue to be used in rural households across Bhutan and eastern Nepal for fevers, coughs, and digestive complaints (Wangchuk et al., 2013; Rokaya et al., 2014).

Scientific and research applications:
* Isolates of ent-kaurane-type diterpenoids from aerial parts are used in biochemical and pharmacological studies to investigate biosynthesis pathways and structure-activity relationships within the Isodon genus.

Chemical constituents and properties:
* Labdane and ent-kaurane diterpenoids, particularly compounds such as phyllostachin, serve as model molecules for understanding terpene chemistry due to their complex stereochemistry and specific bioactivities.
* High-performance liquid chromatography (HPLC) methods with photodiode array detection have been developed for quantitative analysis of these diterpenoids in plant material, enabling standardized comparative studies across collections.
* Gas chromatography-mass spectrometry (GC-MS) protocols are established for profiling volatile constituents, supporting taxonomic and chemotaxonomic research within Isodon species.

No subspecies added yet.

No variety added yet.

No subvariety added yet.

No forms added yet.

No germination or propagation data was added yet.

No reference genome is available on NCBI yet. We are constantly monitoring for new data.

No known contributors. Be the first!

In private collections	0
In public collections	0

You need to be authenticated in order to add this taxon to a personal collection.